Vulnerability-Lookup

alsa-2026:21557

Vulnerability from osv_almalinux

Published

2026-05-28 00:00

Modified

2026-06-08 10:00

Summary

Important: kernel security update

Details

The kernel packages contain the Linux kernel, the core of any Linux operating system.

Security Fix(es):

kernel: can: j1939: j1939_session_new(): fix skb reference counting (CVE-2024-56645)
kernel: ima: don't clear IMA_DIGSIG flag when setting or removing non-IMA xattr (CVE-2025-68183)
kernel: mm: thp: deny THP for files on anonymous inodes (CVE-2026-23375)
kernel: netfilter: nf_tables: release flowtable after rcu grace period on error (CVE-2026-23392)
kernel: netfilter: nf_conntrack_h323: check for zero length in DecodeQ931() (CVE-2026-23455)
kernel: net: sched: act_csum: validate nested VLAN headers (CVE-2026-31684)
kernel: netfilter: ip6t_eui64: reject invalid MAC header for all packets (CVE-2026-31685)
kernel: netfilter: nf_conntrack_helper: pass helper to expect cleanup (CVE-2026-43027)
kernel: io_uring/rsrc: reject zero-length fixed buffer import (CVE-2026-43006)
kernel: Bluetooth: MGMT: validate LTK enc_size on load (CVE-2026-43020)
kernel: HID: wacom: fix out-of-bounds read in wacom_intuos_bt_irq (CVE-2026-43051)
kernel: Bluetooth: SCO: fix race conditions in sco_sock_connect() (CVE-2026-43023)
kernel: netfilter: ctnetlink: ensure safe access to master conntrack (CVE-2026-43116)
kernel: wifi: brcmfmac: validate bsscfg indices in IF events (CVE-2026-43110)
kernel: netfilter: xt_tcpmss: check remaining length before reading optlen (CVE-2026-43190)
kernel: Linux kernel dpaa2-switch: Kernel memory corruption via out-of-bounds write (CVE-2026-43205)
kernel: xfs: fix freemap adjustments when adding xattrs to leaf blocks (CVE-2026-43158)
kernel: mm/page_alloc: clear page->private in free_pages_prepare() (CVE-2026-43303)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

References

URL

Type

	https://access.redhat.com/errata/RHSA-2026:21557	ADVISORY
	https://access.redhat.com/security/cve/CVE-2024-56645	REPORT
	https://access.redhat.com/security/cve/CVE-2025-68183	REPORT
	https://access.redhat.com/security/cve/CVE-2026-23375	REPORT
	https://access.redhat.com/security/cve/CVE-2026-23392	REPORT
	https://access.redhat.com/security/cve/CVE-2026-23455	REPORT
	https://access.redhat.com/security/cve/CVE-2026-31684	REPORT
	https://access.redhat.com/security/cve/CVE-2026-31685	REPORT
	https://access.redhat.com/security/cve/CVE-2026-43006	REPORT
	https://access.redhat.com/security/cve/CVE-2026-43020	REPORT
	https://access.redhat.com/security/cve/CVE-2026-43023	REPORT
	https://access.redhat.com/security/cve/CVE-2026-43027	REPORT
	https://access.redhat.com/security/cve/CVE-2026-43051	REPORT
	https://access.redhat.com/security/cve/CVE-2026-43110	REPORT
	https://access.redhat.com/security/cve/CVE-2026-43116	REPORT
	https://access.redhat.com/security/cve/CVE-2026-43158	REPORT
	https://access.redhat.com/security/cve/CVE-2026-43190	REPORT
	https://access.redhat.com/security/cve/CVE-2026-43205	REPORT
	https://access.redhat.com/security/cve/CVE-2026-43303	REPORT
	https://bugzilla.redhat.com/2334560	REPORT
	https://bugzilla.redhat.com/2422699	REPORT
	https://bugzilla.redhat.com/2451199	REPORT
	https://bugzilla.redhat.com/2451218	REPORT
	https://bugzilla.redhat.com/2454810	REPORT
	https://bugzilla.redhat.com/2461757	REPORT
	https://bugzilla.redhat.com/2461759	REPORT
	https://bugzilla.redhat.com/2464369	REPORT
	https://bugzilla.redhat.com/2464402	REPORT
	https://bugzilla.redhat.com/2464455	REPORT
	https://bugzilla.redhat.com/2464462	REPORT
	https://bugzilla.redhat.com/2464496	REPORT
	https://bugzilla.redhat.com/2467005	REPORT
	https://bugzilla.redhat.com/2467014	REPORT
	https://bugzilla.redhat.com/2467064	REPORT
	https://bugzilla.redhat.com/2467090	REPORT
	https://bugzilla.redhat.com/2467210	REPORT
	https://bugzilla.redhat.com/2468091	REPORT
	https://errata.almalinux.org/10/ALSA-2026-21557.html	ADVISORY

JSON

To clipboard

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  ],
  "details": "The kernel packages contain the Linux kernel, the core of any Linux operating system.  \n\nSecurity Fix(es):  \n\n  * kernel: can: j1939: j1939_session_new(): fix skb reference counting (CVE-2024-56645)\n  * kernel: ima: don\u0027t clear IMA_DIGSIG flag when setting or removing non-IMA xattr (CVE-2025-68183)\n  * kernel: mm: thp: deny THP for files on anonymous inodes (CVE-2026-23375)\n  * kernel: netfilter: nf_tables: release flowtable after rcu grace period on error (CVE-2026-23392)\n  * kernel: netfilter: nf_conntrack_h323: check for zero length in DecodeQ931() (CVE-2026-23455)\n  * kernel: net: sched: act_csum: validate nested VLAN headers (CVE-2026-31684)\n  * kernel: netfilter: ip6t_eui64: reject invalid MAC header for all packets (CVE-2026-31685)\n  * kernel: netfilter: nf_conntrack_helper: pass helper to expect cleanup (CVE-2026-43027)\n  * kernel: io_uring/rsrc: reject zero-length fixed buffer import (CVE-2026-43006)\n  * kernel: Bluetooth: MGMT: validate LTK enc_size on load (CVE-2026-43020)\n  * kernel: HID: wacom: fix out-of-bounds read in wacom_intuos_bt_irq (CVE-2026-43051)\n  * kernel: Bluetooth: SCO: fix race conditions in sco_sock_connect() (CVE-2026-43023)\n  * kernel: netfilter: ctnetlink: ensure safe access to master conntrack (CVE-2026-43116)\n  * kernel: wifi: brcmfmac: validate bsscfg indices in IF events (CVE-2026-43110)\n  * kernel: netfilter: xt_tcpmss: check remaining length before reading optlen (CVE-2026-43190)\n  * kernel: Linux kernel dpaa2-switch: Kernel memory corruption via out-of-bounds write (CVE-2026-43205)\n  * kernel: xfs: fix freemap adjustments when adding xattrs to leaf blocks (CVE-2026-43158)\n  * kernel: mm/page_alloc: clear page-\u003eprivate in free_pages_prepare() (CVE-2026-43303)\n\n\nFor more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.\n",
  "id": "ALSA-2026:21557",
  "modified": "2026-06-08T10:00:15Z",
  "published": "2026-05-28T00:00:00Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://access.redhat.com/errata/RHSA-2026:21557"
    },
    {
      "type": "REPORT",
      "url": "https://access.redhat.com/security/cve/CVE-2024-56645"
    },
    {
      "type": "REPORT",
      "url": "https://access.redhat.com/security/cve/CVE-2025-68183"
    },
    {
      "type": "REPORT",
      "url": "https://access.redhat.com/security/cve/CVE-2026-23375"
    },
    {
      "type": "REPORT",
      "url": "https://access.redhat.com/security/cve/CVE-2026-23392"
    },
    {
      "type": "REPORT",
      "url": "https://access.redhat.com/security/cve/CVE-2026-23455"
    },
    {
      "type": "REPORT",
      "url": "https://access.redhat.com/security/cve/CVE-2026-31684"
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    {
      "type": "REPORT",
      "url": "https://access.redhat.com/security/cve/CVE-2026-31685"
    },
    {
      "type": "REPORT",
      "url": "https://access.redhat.com/security/cve/CVE-2026-43006"
    },
    {
      "type": "REPORT",
      "url": "https://access.redhat.com/security/cve/CVE-2026-43020"
    },
    {
      "type": "REPORT",
      "url": "https://access.redhat.com/security/cve/CVE-2026-43023"
    },
    {
      "type": "REPORT",
      "url": "https://access.redhat.com/security/cve/CVE-2026-43027"
    },
    {
      "type": "REPORT",
      "url": "https://access.redhat.com/security/cve/CVE-2026-43051"
    },
    {
      "type": "REPORT",
      "url": "https://access.redhat.com/security/cve/CVE-2026-43110"
    },
    {
      "type": "REPORT",
      "url": "https://access.redhat.com/security/cve/CVE-2026-43116"
    },
    {
      "type": "REPORT",
      "url": "https://access.redhat.com/security/cve/CVE-2026-43158"
    },
    {
      "type": "REPORT",
      "url": "https://access.redhat.com/security/cve/CVE-2026-43190"
    },
    {
      "type": "REPORT",
      "url": "https://access.redhat.com/security/cve/CVE-2026-43205"
    },
    {
      "type": "REPORT",
      "url": "https://access.redhat.com/security/cve/CVE-2026-43303"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/2334560"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/2422699"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/2451199"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/2451218"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/2454810"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/2461757"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/2461759"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/2464369"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/2464402"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/2464455"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/2464462"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/2464496"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/2467005"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/2467014"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/2467064"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/2467090"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/2467210"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/2468091"
    },
    {
      "type": "ADVISORY",
      "url": "https://errata.almalinux.org/10/ALSA-2026-21557.html"
    }
  ],
  "related": [
    "CVE-2024-56645",
    "CVE-2025-68183",
    "CVE-2026-23375",
    "CVE-2026-23392",
    "CVE-2026-23455",
    "CVE-2026-31684",
    "CVE-2026-31685",
    "CVE-2026-43027",
    "CVE-2026-43006",
    "CVE-2026-43020",
    "CVE-2026-43051",
    "CVE-2026-43023",
    "CVE-2026-43116",
    "CVE-2026-43110",
    "CVE-2026-43190",
    "CVE-2026-43205",
    "CVE-2026-43158",
    "CVE-2026-43303"
  ],
  "summary": "Important: kernel security update"
}

CVE-2024-56645 (GCVE-0-2024-56645)

Vulnerability from cvelistv5 – Published: 2024-12-27 15:02 – Updated: 2026-05-11 20:56

Title

can: j1939: j1939_session_new(): fix skb reference counting

Summary

In the Linux kernel, the following vulnerability has been resolved: can: j1939: j1939_session_new(): fix skb reference counting Since j1939_session_skb_queue() does an extra skb_get() for each new skb, do the same for the initial one in j1939_session_new() to avoid refcount underflow. [mkl: clean up commit message]

Severity

No CVSS data available.

Assigner

Linux

References

9 references

URL	Tags
https://git.kernel.org/stable/c/224e606a8d8e8c7db…
https://git.kernel.org/stable/c/b3282c2bebeeb82ce…
https://git.kernel.org/stable/c/4199dd78a59896e09…
https://git.kernel.org/stable/c/f117cba69cbbd496b…
https://git.kernel.org/stable/c/426d94815e12b6bdb…
https://git.kernel.org/stable/c/68fceb143b635cdc5…
https://git.kernel.org/stable/c/a8c695005bfe6569a…
https://lists.debian.org/debian-lts-announce/2025…
https://lists.debian.org/debian-lts-announce/2025…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: 9d71dd0c70099914fcd063135da3c580865e924c , < 224e606a8d8e8c7db94036272c47a37455667313 (git) Affected: 9d71dd0c70099914fcd063135da3c580865e924c , < b3282c2bebeeb82ceec492ee4972f51ee7a4a132 (git) Affected: 9d71dd0c70099914fcd063135da3c580865e924c , < 4199dd78a59896e091d3a7a05a77451aa7fd724d (git) Affected: 9d71dd0c70099914fcd063135da3c580865e924c , < f117cba69cbbd496babb3defcdf440df4fd6fe14 (git) Affected: 9d71dd0c70099914fcd063135da3c580865e924c , < 426d94815e12b6bdb9a75af294fbbafb9301601d (git) Affected: 9d71dd0c70099914fcd063135da3c580865e924c , < 68fceb143b635cdc59fed3896d5910aff38f345e (git) Affected: 9d71dd0c70099914fcd063135da3c580865e924c , < a8c695005bfe6569acd73d777ca298ddddd66105 (git)
Linux	Linux	Affected: 5.4 Unaffected: 0 , < 5.4 (semver) Unaffected: 5.4.287 , ≤ 5.4.* (semver) Unaffected: 5.10.231 , ≤ 5.10.* (semver) Unaffected: 5.15.174 , ≤ 5.15.* (semver) Unaffected: 6.1.120 , ≤ 6.1.* (semver) Unaffected: 6.6.66 , ≤ 6.6.* (semver) Unaffected: 6.12.5 , ≤ 6.12.* (semver) Unaffected: 6.13 , ≤ * (original_commit_for_fix)

Show details on NVD website

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To clipboard

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CVE-2025-68183 (GCVE-0-2025-68183)

Vulnerability from cvelistv5 – Published: 2025-12-16 13:43 – Updated: 2026-05-11 21:48

Title

ima: don't clear IMA_DIGSIG flag when setting or removing non-IMA xattr

Summary

In the Linux kernel, the following vulnerability has been resolved: ima: don't clear IMA_DIGSIG flag when setting or removing non-IMA xattr Currently when both IMA and EVM are in fix mode, the IMA signature will be reset to IMA hash if a program first stores IMA signature in security.ima and then writes/removes some other security xattr for the file. For example, on Fedora, after booting the kernel with "ima_appraise=fix evm=fix ima_policy=appraise_tcb" and installing rpm-plugin-ima, installing/reinstalling a package will not make good reference IMA signature generated. Instead IMA hash is generated, # getfattr -m - -d -e hex /usr/bin/bash # file: usr/bin/bash security.ima=0x0404... This happens because when setting security.selinux, the IMA_DIGSIG flag that had been set early was cleared. As a result, IMA hash is generated when the file is closed. Similarly, IMA signature can be cleared on file close after removing security xattr like security.evm or setting/removing ACL. Prevent replacing the IMA file signature with a file hash, by preventing the IMA_DIGSIG flag from being reset. Here's a minimal C reproducer which sets security.selinux as the last step which can also replaced by removing security.evm or setting ACL, #include <stdio.h> #include <sys/xattr.h> #include <fcntl.h> #include <unistd.h> #include <string.h> #include <stdlib.h> int main() { const char* file_path = "/usr/sbin/test_binary"; const char* hex_string = "030204d33204490066306402304"; int length = strlen(hex_string); char* ima_attr_value; int fd; fd = open(file_path, O_WRONLY|O_CREAT|O_EXCL, 0644); if (fd == -1) { perror("Error opening file"); return 1; } ima_attr_value = (char*)malloc(length / 2 ); for (int i = 0, j = 0; i < length; i += 2, j++) { sscanf(hex_string + i, "%2hhx", &ima_attr_value[j]); } if (fsetxattr(fd, "security.ima", ima_attr_value, length/2, 0) == -1) { perror("Error setting extended attribute"); close(fd); return 1; } const char* selinux_value= "system_u:object_r:bin_t:s0"; if (fsetxattr(fd, "security.selinux", selinux_value, strlen(selinux_value), 0) == -1) { perror("Error setting extended attribute"); close(fd); return 1; } close(fd); return 0; }

Severity

No CVSS data available.

Assigner

Linux

References

4 references

URL	Tags
https://git.kernel.org/stable/c/d2993a7e98eb70c73…
https://git.kernel.org/stable/c/edd824eb45e4f7e05…
https://git.kernel.org/stable/c/02aa671c08a4834be…
https://git.kernel.org/stable/c/88b4cbcf6b041ae0f…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: e3ccfe1ad7d895487977ef64eda3441d16c9851a , < d2993a7e98eb70c737c6f5365a190e79c72b8407 (git) Affected: e3ccfe1ad7d895487977ef64eda3441d16c9851a , < edd824eb45e4f7e05ad3ab090dab6dbdb79cd292 (git) Affected: e3ccfe1ad7d895487977ef64eda3441d16c9851a , < 02aa671c08a4834bef5166743a7b88686fbfa023 (git) Affected: e3ccfe1ad7d895487977ef64eda3441d16c9851a , < 88b4cbcf6b041ae0f2fc8a34554a5b6a83a2b7cd (git)
Linux	Linux	Affected: 5.14 Unaffected: 0 , < 5.14 (semver) Unaffected: 6.6.117 , ≤ 6.6.* (semver) Unaffected: 6.12.58 , ≤ 6.12.* (semver) Unaffected: 6.17.8 , ≤ 6.17.* (semver) Unaffected: 6.18 , ≤ * (original_commit_for_fix)

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CVE-2026-23375 (GCVE-0-2026-23375)

Vulnerability from cvelistv5 – Published: 2026-03-25 10:27 – Updated: 2026-05-11 22:05

Title

mm: thp: deny THP for files on anonymous inodes

Summary

In the Linux kernel, the following vulnerability has been resolved: mm: thp: deny THP for files on anonymous inodes file_thp_enabled() incorrectly allows THP for files on anonymous inodes (e.g. guest_memfd and secretmem). These files are created via alloc_file_pseudo(), which does not call get_write_access() and leaves inode->i_writecount at 0. Combined with S_ISREG(inode->i_mode) being true, they appear as read-only regular files when CONFIG_READ_ONLY_THP_FOR_FS is enabled, making them eligible for THP collapse. Anonymous inodes can never pass the inode_is_open_for_write() check since their i_writecount is never incremented through the normal VFS open path. The right thing to do is to exclude them from THP eligibility altogether, since CONFIG_READ_ONLY_THP_FOR_FS was designed for real filesystem files (e.g. shared libraries), not for pseudo-filesystem inodes. For guest_memfd, this allows khugepaged and MADV_COLLAPSE to create large folios in the page cache via the collapse path, but the guest_memfd fault handler does not support large folios. This triggers WARN_ON_ONCE(folio_test_large(folio)) in kvm_gmem_fault_user_mapping(). For secretmem, collapse_file() tries to copy page contents through the direct map, but secretmem pages are removed from the direct map. This can result in a kernel crash: BUG: unable to handle page fault for address: ffff88810284d000 RIP: 0010:memcpy_orig+0x16/0x130 Call Trace: collapse_file hpage_collapse_scan_file madvise_collapse Secretmem is not affected by the crash on upstream as the memory failure recovery handles the failed copy gracefully, but it still triggers confusing false memory failure reports: Memory failure: 0x106d96f: recovery action for clean unevictable LRU page: Recovered Check IS_ANON_FILE(inode) in file_thp_enabled() to deny THP for all anonymous inode files.

Severity

No CVSS data available.

Assigner

Linux

References

4 references

URL	Tags
https://git.kernel.org/stable/c/08de46a75f91a6661…
https://git.kernel.org/stable/c/0524ee56af2c9bfba…
https://git.kernel.org/stable/c/f6fa05f0dddd38741…
https://git.kernel.org/stable/c/dd085fe9a8ebfc5d1…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: 7fbb5e188248c50f737720825da1864ce42536d1 , < 08de46a75f91a6661bc1ce0a93614f4bc313c581 (git) Affected: 7fbb5e188248c50f737720825da1864ce42536d1 , < 0524ee56af2c9bfbad152a810f1ca95de8ca00d7 (git) Affected: 7fbb5e188248c50f737720825da1864ce42536d1 , < f6fa05f0dddd387417d0c28281ddb951582514d6 (git) Affected: 7fbb5e188248c50f737720825da1864ce42536d1 , < dd085fe9a8ebfc5d10314c60452db38d2b75e609 (git)
Linux	Linux	Affected: 6.8 Unaffected: 0 , < 6.8 (semver) Unaffected: 6.12.78 , ≤ 6.12.* (semver) Unaffected: 6.18.17 , ≤ 6.18.* (semver) Unaffected: 6.19.7 , ≤ 6.19.* (semver) Unaffected: 7.0 , ≤ * (original_commit_for_fix)

Show details on NVD website

JSON

To clipboard

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CVE-2026-23392 (GCVE-0-2026-23392)

Vulnerability from cvelistv5 – Published: 2026-03-25 10:33 – Updated: 2026-05-11 22:05

Title

netfilter: nf_tables: release flowtable after rcu grace period on error

Summary

In the Linux kernel, the following vulnerability has been resolved: netfilter: nf_tables: release flowtable after rcu grace period on error Call synchronize_rcu() after unregistering the hooks from error path, since a hook that already refers to this flowtable can be already registered, exposing this flowtable to packet path and nfnetlink_hook control plane. This error path is rare, it should only happen by reaching the maximum number hooks or by failing to set up to hardware offload, just call synchronize_rcu(). There is a check for already used device hooks by different flowtable that could result in EEXIST at this late stage. The hook parser can be updated to perform this check earlier to this error path really becomes rarely exercised. Uncovered by KASAN reported as use-after-free from nfnetlink_hook path when dumping hooks.

Severity

7.8 (High)


                        
                          CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Assigner

Linux

References

6 references

URL	Tags
https://git.kernel.org/stable/c/d2632de96ccb066e0…
https://git.kernel.org/stable/c/adee3436ccd29f1e5…
https://git.kernel.org/stable/c/7e3955b282eae20d6…
https://git.kernel.org/stable/c/c8092edb9a11f20f9…
https://git.kernel.org/stable/c/e78a2dcc7cfb87b64…
https://git.kernel.org/stable/c/d73f4b53aaaea4c95…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: 3b49e2e94e6ebb8b23d0955d9e898254455734f8 , < d2632de96ccb066e0131ad1494241b9c281c60b8 (git) Affected: 3b49e2e94e6ebb8b23d0955d9e898254455734f8 , < adee3436ccd29f1e514c028899e400cbc6d84065 (git) Affected: 3b49e2e94e6ebb8b23d0955d9e898254455734f8 , < 7e3955b282eae20d61c75e499c75eade51c20060 (git) Affected: 3b49e2e94e6ebb8b23d0955d9e898254455734f8 , < c8092edb9a11f20f95ccceeb9422b7dd0df337bd (git) Affected: 3b49e2e94e6ebb8b23d0955d9e898254455734f8 , < e78a2dcc7cfb87b64a631441ca7681492b347ef6 (git) Affected: 3b49e2e94e6ebb8b23d0955d9e898254455734f8 , < d73f4b53aaaea4c95f245e491aa5eeb8a21874ce (git)
Linux	Linux	Affected: 4.16 Unaffected: 0 , < 4.16 (semver) Unaffected: 6.1.167 , ≤ 6.1.* (semver) Unaffected: 6.6.130 , ≤ 6.6.* (semver) Unaffected: 6.12.78 , ≤ 6.12.* (semver) Unaffected: 6.18.20 , ≤ 6.18.* (semver) Unaffected: 6.19.10 , ≤ 6.19.* (semver) Unaffected: 7.0 , ≤ * (original_commit_for_fix)

Show details on NVD website

JSON

To clipboard

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CVE-2026-23455 (GCVE-0-2026-23455)

Vulnerability from cvelistv5 – Published: 2026-04-03 15:15 – Updated: 2026-05-11 22:07

Title

netfilter: nf_conntrack_h323: check for zero length in DecodeQ931()

Summary

In the Linux kernel, the following vulnerability has been resolved: netfilter: nf_conntrack_h323: check for zero length in DecodeQ931() In DecodeQ931(), the UserUserIE code path reads a 16-bit length from the packet, then decrements it by 1 to skip the protocol discriminator byte before passing it to DecodeH323_UserInformation(). If the encoded length is 0, the decrement wraps to -1, which is then passed as a large value to the decoder, leading to an out-of-bounds read. Add a check to ensure len is positive after the decrement.

Severity

9.1 (Critical)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H

Assigner

Linux

References

8 references

URL	Tags
https://git.kernel.org/stable/c/2121f5fbe88daff0f…
https://git.kernel.org/stable/c/65fa92f79677858b1…
https://git.kernel.org/stable/c/495e97af9e7249ee0…
https://git.kernel.org/stable/c/f5e4f4e4cdb75ec36…
https://git.kernel.org/stable/c/633e8f87dad32263f…
https://git.kernel.org/stable/c/9d00fe7d6d7c5b5f1…
https://git.kernel.org/stable/c/b652b05d51003ac07…
https://git.kernel.org/stable/c/f173d0f4c0f689173…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: 5e35941d990123f155b02d5663e51a24f816b6f3 , < 2121f5fbe88daff0f1fc5bc47d359426c74b86b0 (git) Affected: 5e35941d990123f155b02d5663e51a24f816b6f3 , < 65fa92f79677858b14b9e4b7275f26639afe2710 (git) Affected: 5e35941d990123f155b02d5663e51a24f816b6f3 , < 495e97af9e7249ee02b72bb1d0848a6efc3700f4 (git) Affected: 5e35941d990123f155b02d5663e51a24f816b6f3 , < f5e4f4e4cdb75ec36802059a94195a31f193da60 (git) Affected: 5e35941d990123f155b02d5663e51a24f816b6f3 , < 633e8f87dad32263f6a57dccdb873f042c062111 (git) Affected: 5e35941d990123f155b02d5663e51a24f816b6f3 , < 9d00fe7d6d7c5b5f1065a6e042b54f2e44bd6df8 (git) Affected: 5e35941d990123f155b02d5663e51a24f816b6f3 , < b652b05d51003ac074b912684f9ec7486231717b (git) Affected: 5e35941d990123f155b02d5663e51a24f816b6f3 , < f173d0f4c0f689173f8cdac79991043a4a89bf66 (git)
Linux	Linux	Affected: 2.6.17 Unaffected: 0 , < 2.6.17 (semver) Unaffected: 5.10.253 , ≤ 5.10.* (semver) Unaffected: 5.15.203 , ≤ 5.15.* (semver) Unaffected: 6.1.167 , ≤ 6.1.* (semver) Unaffected: 6.6.130 , ≤ 6.6.* (semver) Unaffected: 6.12.78 , ≤ 6.12.* (semver) Unaffected: 6.18.20 , ≤ 6.18.* (semver) Unaffected: 6.19.10 , ≤ 6.19.* (semver) Unaffected: 7.0 , ≤ * (original_commit_for_fix)

Show details on NVD website

JSON

To clipboard

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CVE-2026-31684 (GCVE-0-2026-31684)

Vulnerability from cvelistv5 – Published: 2026-04-25 08:47 – Updated: 2026-06-01 16:13

Title

net: sched: act_csum: validate nested VLAN headers

Summary

In the Linux kernel, the following vulnerability has been resolved: net: sched: act_csum: validate nested VLAN headers tcf_csum_act() walks nested VLAN headers directly from skb->data when an skb still carries in-payload VLAN tags. The current code reads vlan->h_vlan_encapsulated_proto and then pulls VLAN_HLEN bytes without first ensuring that the full VLAN header is present in the linear area. If only part of an inner VLAN header is linearized, accessing h_vlan_encapsulated_proto reads past the linear area, and the following skb_pull(VLAN_HLEN) may violate skb invariants. Fix this by requiring pskb_may_pull(skb, VLAN_HLEN) before accessing and pulling each nested VLAN header. If the header still is not fully available, drop the packet through the existing error path.

Severity

No CVSS data available.

Assigner

Linux

References

8 references

URL	Tags
https://git.kernel.org/stable/c/0410c619e86551677…
https://git.kernel.org/stable/c/886469b6455611a51…
https://git.kernel.org/stable/c/46c07ad50fa2f4ba7…
https://git.kernel.org/stable/c/eb3765b90eb8f2a3d…
https://git.kernel.org/stable/c/a69738efea0996d05…
https://git.kernel.org/stable/c/ec4930979b3f7bbeb…
https://git.kernel.org/stable/c/3d165d975305cf76f…
https://git.kernel.org/stable/c/c842743d073bdd683…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: 2ecba2d1e45b24620a7c3df9531895cf68d5dec6 , < 0410c619e86551677fb79887a38eccad3f5a0725 (git) Affected: 2ecba2d1e45b24620a7c3df9531895cf68d5dec6 , < 886469b6455611a511aa6013e957e15e50577513 (git) Affected: 2ecba2d1e45b24620a7c3df9531895cf68d5dec6 , < 46c07ad50fa2f4ba7663ee1b72b75ad7ad45cf09 (git) Affected: 2ecba2d1e45b24620a7c3df9531895cf68d5dec6 , < eb3765b90eb8f2a3d6310a80c14a9e57ec4267a2 (git) Affected: 2ecba2d1e45b24620a7c3df9531895cf68d5dec6 , < a69738efea0996d05a3c7d2178551b891744df1b (git) Affected: 2ecba2d1e45b24620a7c3df9531895cf68d5dec6 , < ec4930979b3f7bbeb7af5744599fc6603a4dba62 (git) Affected: 2ecba2d1e45b24620a7c3df9531895cf68d5dec6 , < 3d165d975305cf76ff0b10a3c798fb31e5f5f9a5 (git) Affected: 2ecba2d1e45b24620a7c3df9531895cf68d5dec6 , < c842743d073bdd683606cb414eb0ca84465dd834 (git) Affected: 3764bfae5056e95617b6ee074129297e11710886 (git) Affected: 4.19.99 , < 4.20 (semver)
Linux	Linux	Affected: 5.1 Unaffected: 0 , < 5.1 (semver) Unaffected: 5.10.258 , ≤ 5.10.* (semver) Unaffected: 5.15.209 , ≤ 5.15.* (semver) Unaffected: 6.1.175 , ≤ 6.1.* (semver) Unaffected: 6.6.136 , ≤ 6.6.* (semver) Unaffected: 6.12.83 , ≤ 6.12.* (semver) Unaffected: 6.18.24 , ≤ 6.18.* (semver) Unaffected: 6.19.14 , ≤ 6.19.* (semver) Unaffected: 7.0 , ≤ * (original_commit_for_fix)

Show details on NVD website

JSON

To clipboard

{
  "containers": {
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CVE-2026-31685 (GCVE-0-2026-31685)

Vulnerability from cvelistv5 – Published: 2026-04-25 08:47 – Updated: 2026-06-01 16:13

Title

netfilter: ip6t_eui64: reject invalid MAC header for all packets

Summary

In the Linux kernel, the following vulnerability has been resolved: netfilter: ip6t_eui64: reject invalid MAC header for all packets `eui64_mt6()` derives a modified EUI-64 from the Ethernet source address and compares it with the low 64 bits of the IPv6 source address. The existing guard only rejects an invalid MAC header when `par->fragoff != 0`. For packets with `par->fragoff == 0`, `eui64_mt6()` can still reach `eth_hdr(skb)` even when the MAC header is not valid. Fix this by removing the `par->fragoff != 0` condition so that packets with an invalid MAC header are rejected before accessing `eth_hdr(skb)`.

Severity

9.4 (Critical)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:H

Assigner

Linux

References

8 references

URL	Tags
https://git.kernel.org/stable/c/4d75bc2cd093bf580…
https://git.kernel.org/stable/c/7d6a57411caf54df0…
https://git.kernel.org/stable/c/d5603591373441fec…
https://git.kernel.org/stable/c/288138418bef956f8…
https://git.kernel.org/stable/c/9eda5478746ef7dc0…
https://git.kernel.org/stable/c/807d6ee15804df6f0…
https://git.kernel.org/stable/c/309ae3e9a51a69699…
https://git.kernel.org/stable/c/fdce0b3590f724540…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 4d75bc2cd093bf5803edf512c099bfb220fd6459 (git) Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 7d6a57411caf54df025860c9b1a82cd42d57a562 (git) Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < d5603591373441fecf9951833d6d873e09320f08 (git) Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 288138418bef956f8b295751a4536c60f0e89f4a (git) Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 9eda5478746ef7dc0e4e537b5a5e4b0ca1027091 (git) Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 807d6ee15804df6f01a35c910f09612e858739a6 (git) Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 309ae3e9a51a69699ca94eac5fac5688fa562d55 (git) Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < fdce0b3590f724540795b874b4c8850c90e6b0a8 (git)
Linux	Linux	Affected: 2.6.12 Unaffected: 0 , < 2.6.12 (semver) Unaffected: 5.10.258 , ≤ 5.10.* (semver) Unaffected: 5.15.209 , ≤ 5.15.* (semver) Unaffected: 6.1.175 , ≤ 6.1.* (semver) Unaffected: 6.6.136 , ≤ 6.6.* (semver) Unaffected: 6.12.83 , ≤ 6.12.* (semver) Unaffected: 6.18.24 , ≤ 6.18.* (semver) Unaffected: 6.19.14 , ≤ 6.19.* (semver) Unaffected: 7.0 , ≤ * (original_commit_for_fix)

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "net/ipv6/netfilter/ip6t_eui64.c"
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          "vendor": "Linux",
          "versions": [
            {
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              "version": "6.12.83",
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              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.24",
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            {
              "lessThanOrEqual": "6.19.*",
              "status": "unaffected",
              "version": "6.19.14",
              "versionType": "semver"
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            {
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              "version": "7.0",
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CVE-2026-43006 (GCVE-0-2026-43006)

Vulnerability from cvelistv5 – Published: 2026-05-01 14:15 – Updated: 2026-05-11 22:15

Title

io_uring/rsrc: reject zero-length fixed buffer import

Summary

In the Linux kernel, the following vulnerability has been resolved: io_uring/rsrc: reject zero-length fixed buffer import validate_fixed_range() admits buf_addr at the exact end of the registered region when len is zero, because the check uses strict greater-than (buf_end > imu->ubuf + imu->len). io_import_fixed() then computes offset == imu->len, which causes the bvec skip logic to advance past the last bio_vec entry and read bv_offset from out-of-bounds slab memory. Return early from io_import_fixed() when len is zero. A zero-length import has no data to transfer and should not walk the bvec array at all. BUG: KASAN: slab-out-of-bounds in io_import_reg_buf+0x697/0x7f0 Read of size 4 at addr ffff888002bcc254 by task poc/103 Call Trace: io_import_reg_buf+0x697/0x7f0 io_write_fixed+0xd9/0x250 __io_issue_sqe+0xad/0x710 io_issue_sqe+0x7d/0x1100 io_submit_sqes+0x86a/0x23c0 __do_sys_io_uring_enter+0xa98/0x1590 Allocated by task 103: The buggy address is located 12 bytes to the right of allocated 584-byte region [ffff888002bcc000, ffff888002bcc248)

Severity

7.1 (High)


                        
                          CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H

Assigner

Linux

References

3 references

URL	Tags
https://git.kernel.org/stable/c/040a1e7e0e2f01851…
https://git.kernel.org/stable/c/40170fc1a79c1b2e6…
https://git.kernel.org/stable/c/111a12b422a8cfa93…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: 8622b20f23ed165f48b8ca61503a107d17f8d585 , < 040a1e7e0e2f01851fec1dd2d96906f8636a9f75 (git) Affected: 8622b20f23ed165f48b8ca61503a107d17f8d585 , < 40170fc1a79c1b2e68f09ae6aac687b7305ae6f4 (git) Affected: 8622b20f23ed165f48b8ca61503a107d17f8d585 , < 111a12b422a8cfa93deabaef26fec48237163214 (git)
Linux	Linux	Affected: 6.15 Unaffected: 0 , < 6.15 (semver) Unaffected: 6.18.22 , ≤ 6.18.* (semver) Unaffected: 6.19.12 , ≤ 6.19.* (semver) Unaffected: 7.0 , ≤ * (original_commit_for_fix)

Show details on NVD website

JSON

To clipboard

{
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CVE-2026-43020 (GCVE-0-2026-43020)

Vulnerability from cvelistv5 – Published: 2026-05-01 14:15 – Updated: 2026-05-11 22:16

Title

Bluetooth: MGMT: validate LTK enc_size on load

Summary

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: MGMT: validate LTK enc_size on load Load Long Term Keys stores the user-provided enc_size and later uses it to size fixed-size stack operations when replying to LE LTK requests. An enc_size larger than the 16-byte key buffer can therefore overflow the reply stack buffer. Reject oversized enc_size values while validating the management LTK record so invalid keys never reach the stored key state.

Severity

No CVSS data available.

Assigner

Linux

References

8 references

URL	Tags
https://git.kernel.org/stable/c/0f37d1e65c6d71ad9…
https://git.kernel.org/stable/c/257cdb960d8ff6d60…
https://git.kernel.org/stable/c/c34577f517b556fb6…
https://git.kernel.org/stable/c/f71695e81f4cb428f…
https://git.kernel.org/stable/c/82f342b3b006ca1d6…
https://git.kernel.org/stable/c/50fb64defa72a3fec…
https://git.kernel.org/stable/c/40ba329e8b4cd2fb1…
https://git.kernel.org/stable/c/b8dbe9648d69059cf…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: 346af67b8d116f01ef696fd47959a55deb2db8b6 , < 0f37d1e65c6d71ad94ccfb5c602163c525db789d (git) Affected: 346af67b8d116f01ef696fd47959a55deb2db8b6 , < 257cdb960d8ff6d60bb6461b03c814b6cf0c9e64 (git) Affected: 346af67b8d116f01ef696fd47959a55deb2db8b6 , < c34577f517b556fb6ca173d45bf7e766ae2564ce (git) Affected: 346af67b8d116f01ef696fd47959a55deb2db8b6 , < f71695e81f4cb428f3c7e2138eae88199005b52c (git) Affected: 346af67b8d116f01ef696fd47959a55deb2db8b6 , < 82f342b3b006ca1d65f4890c05f2ec32fcb808b6 (git) Affected: 346af67b8d116f01ef696fd47959a55deb2db8b6 , < 50fb64defa72a3fecd0af1ca7c6b47b5c5c2b257 (git) Affected: 346af67b8d116f01ef696fd47959a55deb2db8b6 , < 40ba329e8b4cd2fb11b0caf5e6a543ceaebb6009 (git) Affected: 346af67b8d116f01ef696fd47959a55deb2db8b6 , < b8dbe9648d69059cfe3a28917bfbf7e61efd7f15 (git)
Linux	Linux	Affected: 3.4 Unaffected: 0 , < 3.4 (semver) Unaffected: 5.10.253 , ≤ 5.10.* (semver) Unaffected: 5.15.203 , ≤ 5.15.* (semver) Unaffected: 6.1.168 , ≤ 6.1.* (semver) Unaffected: 6.6.134 , ≤ 6.6.* (semver) Unaffected: 6.12.81 , ≤ 6.12.* (semver) Unaffected: 6.18.22 , ≤ 6.18.* (semver) Unaffected: 6.19.12 , ≤ 6.19.* (semver) Unaffected: 7.0 , ≤ * (original_commit_for_fix)

Show details on NVD website

JSON

To clipboard

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CVE-2026-43023 (GCVE-0-2026-43023)

Vulnerability from cvelistv5 – Published: 2026-05-01 14:15 – Updated: 2026-05-23 16:06

Title

Bluetooth: SCO: fix race conditions in sco_sock_connect()

Summary

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: SCO: fix race conditions in sco_sock_connect() sco_sock_connect() checks sk_state and sk_type without holding the socket lock. Two concurrent connect() syscalls on the same socket can both pass the check and enter sco_connect(), leading to use-after-free. The buggy scenario involves three participants and was confirmed with additional logging instrumentation: Thread A (connect): HCI disconnect: Thread B (connect): sco_sock_connect(sk) sco_sock_connect(sk) sk_state==BT_OPEN sk_state==BT_OPEN (pass, no lock) (pass, no lock) sco_connect(sk): sco_connect(sk): hci_dev_lock hci_dev_lock hci_connect_sco <- blocked -> hcon1 sco_conn_add->conn1 lock_sock(sk) sco_chan_add: conn1->sk = sk sk->conn = conn1 sk_state=BT_CONNECT release_sock hci_dev_unlock hci_dev_lock sco_conn_del: lock_sock(sk) sco_chan_del: sk->conn=NULL conn1->sk=NULL sk_state= BT_CLOSED SOCK_ZAPPED release_sock hci_dev_unlock (unblocked) hci_connect_sco -> hcon2 sco_conn_add -> conn2 lock_sock(sk) sco_chan_add: sk->conn=conn2 sk_state= BT_CONNECT // zombie sk! release_sock hci_dev_unlock Thread B revives a BT_CLOSED + SOCK_ZAPPED socket back to BT_CONNECT. Subsequent cleanup triggers double sock_put() and use-after-free. Meanwhile conn1 is leaked as it was orphaned when sco_conn_del() cleared the association. Fix this by: - Moving lock_sock() before the sk_state/sk_type checks in sco_sock_connect() to serialize concurrent connect attempts - Fixing the sk_type != SOCK_SEQPACKET check to actually return the error instead of just assigning it - Adding a state re-check in sco_connect() after lock_sock() to catch state changes during the window between the locks - Adding sco_pi(sk)->conn check in sco_chan_add() to prevent double-attach of a socket to multiple connections - Adding hci_conn_drop() on sco_chan_add failure to prevent HCI connection leaks

Severity

7.8 (High)


                        
                          CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Assigner

Linux

References

6 references

URL	Tags
https://git.kernel.org/stable/c/dabf22269242e2f2b…
https://git.kernel.org/stable/c/adb90cd0f9f7a8d43…
https://git.kernel.org/stable/c/7e296ffdab5bdab71…
https://git.kernel.org/stable/c/98c8d3bfdaa657d8f…
https://git.kernel.org/stable/c/d002bd11024bd231b…
https://git.kernel.org/stable/c/8a5b0135d4a5d9683…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: 70a13b1e25fef37c87c8a1228ddb8900efbca7cf , < dabf22269242e2f2bf44c43fcdc2fa763df7f9cc (git) Affected: 9a8ec9e8ebb5a7c0cfbce2d6b4a6b67b2b78e8f3 , < adb90cd0f9f7a8d438fcb93354040fbafc5ae2a0 (git) Affected: 9a8ec9e8ebb5a7c0cfbce2d6b4a6b67b2b78e8f3 , < 7e296ffdab5bdab718dff7c14288fdcb9154fa27 (git) Affected: 9a8ec9e8ebb5a7c0cfbce2d6b4a6b67b2b78e8f3 , < 98c8d3bfdaa657d8f472dbbebd7ea8cd816d8a8d (git) Affected: 9a8ec9e8ebb5a7c0cfbce2d6b4a6b67b2b78e8f3 , < d002bd11024bd231bcb606877e33951ffb7bed14 (git) Affected: 9a8ec9e8ebb5a7c0cfbce2d6b4a6b67b2b78e8f3 , < 8a5b0135d4a5d9683203a3d9a12a711ccec5936b (git) Affected: 6.1.109 , < 6.1.168 (semver)
Linux	Linux	Affected: 6.3 Unaffected: 0 , < 6.3 (semver) Unaffected: 6.1.168 , ≤ 6.1.* (semver) Unaffected: 6.6.134 , ≤ 6.6.* (semver) Unaffected: 6.12.81 , ≤ 6.12.* (semver) Unaffected: 6.18.22 , ≤ 6.18.* (semver) Unaffected: 6.19.12 , ≤ 6.19.* (semver) Unaffected: 7.0 , ≤ * (original_commit_for_fix)

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Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

Action not permitted

alsa-2026:21557

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Tags

Sightings

Nomenclature