CWE-416
AllowedUse After Free
Abstraction: Variant · Status: Stable
The product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.
9814 vulnerabilities reference this CWE, most recent first.
GHSA-2G53-3PJ8-QVXV
Vulnerability from github – Published: 2022-05-13 01:23 – Updated: 2022-05-13 01:23Use-after-free vulnerability in the path_openat function in fs/namei.c in the Linux kernel 3.x and 4.x before 4.0.4 allows local users to cause a denial of service or possibly have unspecified other impact via O_TMPFILE filesystem operations that leverage a duplicate cleanup operation.
{
"affected": [],
"aliases": [
"CVE-2015-5706"
],
"database_specific": {
"cwe_ids": [
"CWE-416"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2015-08-31T10:59:00Z",
"severity": "MODERATE"
},
"details": "Use-after-free vulnerability in the path_openat function in fs/namei.c in the Linux kernel 3.x and 4.x before 4.0.4 allows local users to cause a denial of service or possibly have unspecified other impact via O_TMPFILE filesystem operations that leverage a duplicate cleanup operation.",
"id": "GHSA-2g53-3pj8-qvxv",
"modified": "2022-05-13T01:23:45Z",
"published": "2022-05-13T01:23:45Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2015-5706"
},
{
"type": "WEB",
"url": "https://github.com/torvalds/linux/commit/f15133df088ecadd141ea1907f2c96df67c729f0"
},
{
"type": "WEB",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=1250047"
},
{
"type": "WEB",
"url": "https://source.android.com/security/bulletin/2017-01-01.html"
},
{
"type": "WEB",
"url": "http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=f15133df088ecadd141ea1907f2c96df67c729f0"
},
{
"type": "WEB",
"url": "http://twitter.com/grsecurity/statuses/597127122910490624"
},
{
"type": "WEB",
"url": "http://www.debian.org/security/2015/dsa-3329"
},
{
"type": "WEB",
"url": "http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.0.4"
},
{
"type": "WEB",
"url": "http://www.openwall.com/lists/oss-security/2015/08/01/5"
},
{
"type": "WEB",
"url": "http://www.securityfocus.com/bid/76142"
},
{
"type": "WEB",
"url": "http://www.ubuntu.com/usn/USN-2680-1"
},
{
"type": "WEB",
"url": "http://www.ubuntu.com/usn/USN-2681-1"
}
],
"schema_version": "1.4.0",
"severity": []
}
GHSA-2G8X-M9JV-C9CQ
Vulnerability from github – Published: 2022-05-24 16:49 – Updated: 2022-05-24 16:49In loop of DnsTlsSocket.cpp, there is a possible heap memory corruption due to a use after free. This could lead to remote code execution in the netd server with no additional execution privileges needed. User interaction is not needed for exploitation. Product: Android. Versions: Android-9. Android ID: A-122856181.
{
"affected": [],
"aliases": [
"CVE-2019-2111"
],
"database_specific": {
"cwe_ids": [
"CWE-416"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2019-07-08T18:15:00Z",
"severity": "CRITICAL"
},
"details": "In loop of DnsTlsSocket.cpp, there is a possible heap memory corruption due to a use after free. This could lead to remote code execution in the netd server with no additional execution privileges needed. User interaction is not needed for exploitation. Product: Android. Versions: Android-9. Android ID: A-122856181.",
"id": "GHSA-2g8x-m9jv-c9cq",
"modified": "2022-05-24T16:49:46Z",
"published": "2022-05-24T16:49:46Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2019-2111"
},
{
"type": "WEB",
"url": "https://source.android.com/security/bulletin/2019-07-01"
}
],
"schema_version": "1.4.0",
"severity": []
}
GHSA-2G9Q-G8G7-R7XW
Vulnerability from github – Published: 2022-05-24 17:04 – Updated: 2022-05-24 17:04Multiple memory corruption issues were addressed with improved memory handling. This issue is fixed in iOS 12.2, tvOS 12.2, Safari 12.1, iTunes 12.9.4 for Windows, iCloud for Windows 7.11. Processing maliciously crafted web content may lead to arbitrary code execution.
{
"affected": [],
"aliases": [
"CVE-2019-8524"
],
"database_specific": {
"cwe_ids": [
"CWE-416"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2019-12-18T18:15:00Z",
"severity": "MODERATE"
},
"details": "Multiple memory corruption issues were addressed with improved memory handling. This issue is fixed in iOS 12.2, tvOS 12.2, Safari 12.1, iTunes 12.9.4 for Windows, iCloud for Windows 7.11. Processing maliciously crafted web content may lead to arbitrary code execution.",
"id": "GHSA-2g9q-g8g7-r7xw",
"modified": "2022-05-24T17:04:11Z",
"published": "2022-05-24T17:04:11Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2019-8524"
},
{
"type": "WEB",
"url": "https://support.apple.com/HT209599"
},
{
"type": "WEB",
"url": "https://support.apple.com/HT209601"
},
{
"type": "WEB",
"url": "https://support.apple.com/HT209603"
},
{
"type": "WEB",
"url": "https://support.apple.com/HT209604"
},
{
"type": "WEB",
"url": "https://support.apple.com/HT209605"
}
],
"schema_version": "1.4.0",
"severity": []
}
GHSA-2GJ8-F8HJ-PWWH
Vulnerability from github – Published: 2026-05-14 21:30 – Updated: 2026-05-15 00:30Use after free in Input in Google Chrome on Android prior to 148.0.7778.168 allowed a remote attacker who had compromised the renderer process to potentially perform a sandbox escape via a crafted HTML page. (Chromium security severity: Critical)
{
"affected": [],
"aliases": [
"CVE-2026-8513"
],
"database_specific": {
"cwe_ids": [
"CWE-416"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-05-14T20:17:11Z",
"severity": "HIGH"
},
"details": "Use after free in Input in Google Chrome on Android prior to 148.0.7778.168 allowed a remote attacker who had compromised the renderer process to potentially perform a sandbox escape via a crafted HTML page. (Chromium security severity: Critical)",
"id": "GHSA-2gj8-f8hj-pwwh",
"modified": "2026-05-15T00:30:29Z",
"published": "2026-05-14T21:30:44Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-8513"
},
{
"type": "WEB",
"url": "https://chromereleases.googleblog.com/2026/05/stable-channel-update-for-desktop_12.html"
},
{
"type": "WEB",
"url": "https://issues.chromium.org/issues/495939973"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-2GMM-4F9J-MW4P
Vulnerability from github – Published: 2023-08-02 00:30 – Updated: 2024-01-31 18:31Use after free in Tab Groups in Google Chrome prior to 115.0.5790.98 allowed a remote attacker who convinced a user to engage in specific UI interactions to potentially exploit heap corruption via a crafted HTML page. (Chromium security severity: High)
{
"affected": [],
"aliases": [
"CVE-2023-3730"
],
"database_specific": {
"cwe_ids": [
"CWE-416"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2023-08-01T23:15:31Z",
"severity": "HIGH"
},
"details": "Use after free in Tab Groups in Google Chrome prior to 115.0.5790.98 allowed a remote attacker who convinced a user to engage in specific UI interactions to potentially exploit heap corruption via a crafted HTML page. (Chromium security severity: High)",
"id": "GHSA-2gmm-4f9j-mw4p",
"modified": "2024-01-31T18:31:17Z",
"published": "2023-08-02T00:30:39Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2023-3730"
},
{
"type": "WEB",
"url": "https://chromereleases.googleblog.com/2023/07/stable-channel-update-for-desktop.html"
},
{
"type": "WEB",
"url": "https://crbug.com/1453465"
},
{
"type": "WEB",
"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/PQKT7EGDD2P3L7S3NXEDDRCPK4NNZNWJ"
},
{
"type": "WEB",
"url": "https://security.gentoo.org/glsa/202401-34"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-2GQ3-WW97-WFJM
Vulnerability from github – Published: 2026-02-25 19:11 – Updated: 2026-02-25 19:11A heap Use After Free vulnerability exists in the meta coder when an allocation fails and a single byte is written to a stale pointer.
==535852==ERROR: AddressSanitizer: heap-use-after-free on address 0x5210000088ff at pc 0x5581bacac14d bp 0x7ffdf667edf0 sp 0x7ffdf667ede0
WRITE of size 1 at 0x5210000088ff thread T0
{
"affected": [
{
"package": {
"ecosystem": "NuGet",
"name": "Magick.NET-Q16-AnyCPU"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "14.10.3"
}
],
"type": "ECOSYSTEM"
}
]
},
{
"package": {
"ecosystem": "NuGet",
"name": "Magick.NET-Q16-HDRI-AnyCPU"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "14.10.3"
}
],
"type": "ECOSYSTEM"
}
]
},
{
"package": {
"ecosystem": "NuGet",
"name": "Magick.NET-Q16-HDRI-OpenMP-arm64"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "14.10.3"
}
],
"type": "ECOSYSTEM"
}
]
},
{
"package": {
"ecosystem": "NuGet",
"name": "Magick.NET-Q16-HDRI-OpenMP-x64"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "14.10.3"
}
],
"type": "ECOSYSTEM"
}
]
},
{
"package": {
"ecosystem": "NuGet",
"name": "Magick.NET-Q16-HDRI-arm64"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "14.10.3"
}
],
"type": "ECOSYSTEM"
}
]
},
{
"package": {
"ecosystem": "NuGet",
"name": "Magick.NET-Q16-HDRI-x64"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "14.10.3"
}
],
"type": "ECOSYSTEM"
}
]
},
{
"package": {
"ecosystem": "NuGet",
"name": "Magick.NET-Q16-HDRI-x86"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "14.10.3"
}
],
"type": "ECOSYSTEM"
}
]
},
{
"package": {
"ecosystem": "NuGet",
"name": "Magick.NET-Q16-OpenMP-arm64"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "14.10.3"
}
],
"type": "ECOSYSTEM"
}
]
},
{
"package": {
"ecosystem": "NuGet",
"name": "Magick.NET-Q16-OpenMP-x64"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "14.10.3"
}
],
"type": "ECOSYSTEM"
}
]
},
{
"package": {
"ecosystem": "NuGet",
"name": "Magick.NET-Q16-OpenMP-x86"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "14.10.3"
}
],
"type": "ECOSYSTEM"
}
]
},
{
"package": {
"ecosystem": "NuGet",
"name": "Magick.NET-Q16-arm64"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "14.10.3"
}
],
"type": "ECOSYSTEM"
}
]
},
{
"package": {
"ecosystem": "NuGet",
"name": "Magick.NET-Q8-AnyCPU"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "14.10.3"
}
],
"type": "ECOSYSTEM"
}
]
},
{
"package": {
"ecosystem": "NuGet",
"name": "Magick.NET-Q8-OpenMP-arm64"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "14.10.3"
}
],
"type": "ECOSYSTEM"
}
]
},
{
"package": {
"ecosystem": "NuGet",
"name": "Magick.NET-Q8-OpenMP-x64"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "14.10.3"
}
],
"type": "ECOSYSTEM"
}
]
},
{
"package": {
"ecosystem": "NuGet",
"name": "Magick.NET-Q8-arm64"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "14.10.3"
}
],
"type": "ECOSYSTEM"
}
]
},
{
"package": {
"ecosystem": "NuGet",
"name": "Magick.NET-Q8-x64"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "14.10.3"
}
],
"type": "ECOSYSTEM"
}
]
},
{
"package": {
"ecosystem": "NuGet",
"name": "Magick.NET-Q8-x86"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "14.10.3"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"aliases": [],
"database_specific": {
"cwe_ids": [
"CWE-416"
],
"github_reviewed": true,
"github_reviewed_at": "2026-02-25T19:11:50Z",
"nvd_published_at": null,
"severity": "LOW"
},
"details": "A heap Use After Free vulnerability exists in the meta coder when an allocation fails and a single byte is written to a stale pointer.\n\n```\n==535852==ERROR: AddressSanitizer: heap-use-after-free on address 0x5210000088ff at pc 0x5581bacac14d bp 0x7ffdf667edf0 sp 0x7ffdf667ede0\nWRITE of size 1 at 0x5210000088ff thread T0\n```",
"id": "GHSA-2gq3-ww97-wfjm",
"modified": "2026-02-25T19:11:50Z",
"published": "2026-02-25T19:11:50Z",
"references": [
{
"type": "WEB",
"url": "https://github.com/ImageMagick/ImageMagick/security/advisories/GHSA-2gq3-ww97-wfjm"
},
{
"type": "WEB",
"url": "https://github.com/ImageMagick/ImageMagick/commit/f5049954f12c6fcf090a776767526d2a4708d58b"
},
{
"type": "PACKAGE",
"url": "https://github.com/ImageMagick/ImageMagick"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L",
"type": "CVSS_V3"
}
],
"summary": "ImageMagick has a possible heap Use After Free vulnerability in its meta coder"
}
GHSA-2GRW-X2MC-X63F
Vulnerability from github – Published: 2023-02-28 18:30 – Updated: 2023-03-06 21:30In binder_transaction_buffer_release of binder.c, there is a possible use after free due to improper input validation. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation.Product: AndroidVersions: Android kernelAndroid ID: A-257685302References: Upstream kernel
{
"affected": [],
"aliases": [
"CVE-2023-20938"
],
"database_specific": {
"cwe_ids": [
"CWE-416"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2023-02-28T17:15:00Z",
"severity": "HIGH"
},
"details": "In binder_transaction_buffer_release of binder.c, there is a possible use after free due to improper input validation. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation.Product: AndroidVersions: Android kernelAndroid ID: A-257685302References: Upstream kernel",
"id": "GHSA-2grw-x2mc-x63f",
"modified": "2023-03-06T21:30:19Z",
"published": "2023-02-28T18:30:18Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2023-20938"
},
{
"type": "WEB",
"url": "https://source.android.com/security/bulletin/2023-02-01"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-2GWR-36X9-98CQ
Vulnerability from github – Published: 2026-05-29 00:38 – Updated: 2026-05-29 12:31Use after free in Media in Google Chrome on Windows prior to 148.0.7778.216 allowed a remote attacker to execute arbitrary code inside a sandbox via a crafted HTML page. (Chromium security severity: High)
{
"affected": [],
"aliases": [
"CVE-2026-9945"
],
"database_specific": {
"cwe_ids": [
"CWE-416"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-05-28T23:16:52Z",
"severity": "HIGH"
},
"details": "Use after free in Media in Google Chrome on Windows prior to 148.0.7778.216 allowed a remote attacker to execute arbitrary code inside a sandbox via a crafted HTML page. (Chromium security severity: High)",
"id": "GHSA-2gwr-36x9-98cq",
"modified": "2026-05-29T12:31:24Z",
"published": "2026-05-29T00:38:37Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-9945"
},
{
"type": "WEB",
"url": "https://chromereleases.googleblog.com/2026/05/stable-channel-update-for-desktop_0877304591.html"
},
{
"type": "WEB",
"url": "https://issues.chromium.org/issues/503565293"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-2GWR-FRHX-J93X
Vulnerability from github – Published: 2024-12-27 15:31 – Updated: 2025-11-03 21:31In the Linux kernel, the following vulnerability has been resolved:
ubifs: authentication: Fix use-after-free in ubifs_tnc_end_commit
After an insertion in TNC, the tree might split and cause a node to
change its znode->parent. A further deletion of other nodes in the
tree (which also could free the nodes), the aforementioned node's
znode->cparent could still point to a freed node. This
znode->cparent may not be updated when getting nodes to commit in
ubifs_tnc_start_commit(). This could then trigger a use-after-free
when accessing the znode->cparent in write_index() in
ubifs_tnc_end_commit().
This can be triggered by running
rm -f /etc/test-file.bin dd if=/dev/urandom of=/etc/test-file.bin bs=1M count=60 conv=fsync
in a loop, and with CONFIG_UBIFS_FS_AUTHENTICATION. KASAN then
reports:
BUG: KASAN: use-after-free in ubifs_tnc_end_commit+0xa5c/0x1950 Write of size 32 at addr ffffff800a3af86c by task ubifs_bgt0_20/153
Call trace: dump_backtrace+0x0/0x340 show_stack+0x18/0x24 dump_stack_lvl+0x9c/0xbc print_address_description.constprop.0+0x74/0x2b0 kasan_report+0x1d8/0x1f0 kasan_check_range+0xf8/0x1a0 memcpy+0x84/0xf4 ubifs_tnc_end_commit+0xa5c/0x1950 do_commit+0x4e0/0x1340 ubifs_bg_thread+0x234/0x2e0 kthread+0x36c/0x410 ret_from_fork+0x10/0x20
Allocated by task 401: kasan_save_stack+0x38/0x70 __kasan_kmalloc+0x8c/0xd0 __kmalloc+0x34c/0x5bc tnc_insert+0x140/0x16a4 ubifs_tnc_add+0x370/0x52c ubifs_jnl_write_data+0x5d8/0x870 do_writepage+0x36c/0x510 ubifs_writepage+0x190/0x4dc __writepage+0x58/0x154 write_cache_pages+0x394/0x830 do_writepages+0x1f0/0x5b0 filemap_fdatawrite_wbc+0x170/0x25c file_write_and_wait_range+0x140/0x190 ubifs_fsync+0xe8/0x290 vfs_fsync_range+0xc0/0x1e4 do_fsync+0x40/0x90 __arm64_sys_fsync+0x34/0x50 invoke_syscall.constprop.0+0xa8/0x260 do_el0_svc+0xc8/0x1f0 el0_svc+0x34/0x70 el0t_64_sync_handler+0x108/0x114 el0t_64_sync+0x1a4/0x1a8
Freed by task 403: kasan_save_stack+0x38/0x70 kasan_set_track+0x28/0x40 kasan_set_free_info+0x28/0x4c __kasan_slab_free+0xd4/0x13c kfree+0xc4/0x3a0 tnc_delete+0x3f4/0xe40 ubifs_tnc_remove_range+0x368/0x73c ubifs_tnc_remove_ino+0x29c/0x2e0 ubifs_jnl_delete_inode+0x150/0x260 ubifs_evict_inode+0x1d4/0x2e4 evict+0x1c8/0x450 iput+0x2a0/0x3c4 do_unlinkat+0x2cc/0x490 __arm64_sys_unlinkat+0x90/0x100 invoke_syscall.constprop.0+0xa8/0x260 do_el0_svc+0xc8/0x1f0 el0_svc+0x34/0x70 el0t_64_sync_handler+0x108/0x114 el0t_64_sync+0x1a4/0x1a8
The offending memcpy() in ubifs_copy_hash() has a use-after-free
when a node becomes root in TNC but still has a cparent to an already
freed node. More specifically, consider the following TNC:
zroot
/
/
zp1
/
/
zn
Inserting a new node zn_new with a key smaller then zn will trigger
a split in tnc_insert() if zp1 is full:
zroot
/ \
/ \
zp1 zp2
/ \
/ \
zn_new zn
zn->parent has now been moved to zp2, but zn->cparent still
points to zp1.
Now, consider a removal of all the nodes except zn. Just when
tnc_delete() is about to delete zroot and zp2:
zroot
\
\
zp2
\
\
zn
zroot and zp2 get freed and the tree collapses:
zn
zn now becomes the new zroot.
get_znodes_to_commit() will now only find zn, the new zroot, and
write_index() will check its znode->cparent that wrongly points to
the already freed zp1. ubifs_copy_hash() thus gets wrongly called
with znode->cparent->zbranch[znode->iip].hash that triggers the
use-after-free!
Fix this by explicitly setting znode->cparent to NULL in
get_znodes_to_commit() for the root node. The search for the dirty
nodes
---truncated---
{
"affected": [],
"aliases": [
"CVE-2024-53171"
],
"database_specific": {
"cwe_ids": [
"CWE-416"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2024-12-27T14:15:24Z",
"severity": "HIGH"
},
"details": "In the Linux kernel, the following vulnerability has been resolved:\n\nubifs: authentication: Fix use-after-free in ubifs_tnc_end_commit\n\nAfter an insertion in TNC, the tree might split and cause a node to\nchange its `znode-\u003eparent`. A further deletion of other nodes in the\ntree (which also could free the nodes), the aforementioned node\u0027s\n`znode-\u003ecparent` could still point to a freed node. This\n`znode-\u003ecparent` may not be updated when getting nodes to commit in\n`ubifs_tnc_start_commit()`. This could then trigger a use-after-free\nwhen accessing the `znode-\u003ecparent` in `write_index()` in\n`ubifs_tnc_end_commit()`.\n\nThis can be triggered by running\n\n rm -f /etc/test-file.bin\n dd if=/dev/urandom of=/etc/test-file.bin bs=1M count=60 conv=fsync\n\nin a loop, and with `CONFIG_UBIFS_FS_AUTHENTICATION`. KASAN then\nreports:\n\n BUG: KASAN: use-after-free in ubifs_tnc_end_commit+0xa5c/0x1950\n Write of size 32 at addr ffffff800a3af86c by task ubifs_bgt0_20/153\n\n Call trace:\n dump_backtrace+0x0/0x340\n show_stack+0x18/0x24\n dump_stack_lvl+0x9c/0xbc\n print_address_description.constprop.0+0x74/0x2b0\n kasan_report+0x1d8/0x1f0\n kasan_check_range+0xf8/0x1a0\n memcpy+0x84/0xf4\n ubifs_tnc_end_commit+0xa5c/0x1950\n do_commit+0x4e0/0x1340\n ubifs_bg_thread+0x234/0x2e0\n kthread+0x36c/0x410\n ret_from_fork+0x10/0x20\n\n Allocated by task 401:\n kasan_save_stack+0x38/0x70\n __kasan_kmalloc+0x8c/0xd0\n __kmalloc+0x34c/0x5bc\n tnc_insert+0x140/0x16a4\n ubifs_tnc_add+0x370/0x52c\n ubifs_jnl_write_data+0x5d8/0x870\n do_writepage+0x36c/0x510\n ubifs_writepage+0x190/0x4dc\n __writepage+0x58/0x154\n write_cache_pages+0x394/0x830\n do_writepages+0x1f0/0x5b0\n filemap_fdatawrite_wbc+0x170/0x25c\n file_write_and_wait_range+0x140/0x190\n ubifs_fsync+0xe8/0x290\n vfs_fsync_range+0xc0/0x1e4\n do_fsync+0x40/0x90\n __arm64_sys_fsync+0x34/0x50\n invoke_syscall.constprop.0+0xa8/0x260\n do_el0_svc+0xc8/0x1f0\n el0_svc+0x34/0x70\n el0t_64_sync_handler+0x108/0x114\n el0t_64_sync+0x1a4/0x1a8\n\n Freed by task 403:\n kasan_save_stack+0x38/0x70\n kasan_set_track+0x28/0x40\n kasan_set_free_info+0x28/0x4c\n __kasan_slab_free+0xd4/0x13c\n kfree+0xc4/0x3a0\n tnc_delete+0x3f4/0xe40\n ubifs_tnc_remove_range+0x368/0x73c\n ubifs_tnc_remove_ino+0x29c/0x2e0\n ubifs_jnl_delete_inode+0x150/0x260\n ubifs_evict_inode+0x1d4/0x2e4\n evict+0x1c8/0x450\n iput+0x2a0/0x3c4\n do_unlinkat+0x2cc/0x490\n __arm64_sys_unlinkat+0x90/0x100\n invoke_syscall.constprop.0+0xa8/0x260\n do_el0_svc+0xc8/0x1f0\n el0_svc+0x34/0x70\n el0t_64_sync_handler+0x108/0x114\n el0t_64_sync+0x1a4/0x1a8\n\nThe offending `memcpy()` in `ubifs_copy_hash()` has a use-after-free\nwhen a node becomes root in TNC but still has a `cparent` to an already\nfreed node. More specifically, consider the following TNC:\n\n zroot\n /\n /\n zp1\n /\n /\n zn\n\nInserting a new node `zn_new` with a key smaller then `zn` will trigger\na split in `tnc_insert()` if `zp1` is full:\n\n zroot\n / \\\n / \\\n zp1 zp2\n / \\\n / \\\n zn_new zn\n\n`zn-\u003eparent` has now been moved to `zp2`, *but* `zn-\u003ecparent` still\npoints to `zp1`.\n\nNow, consider a removal of all the nodes _except_ `zn`. Just when\n`tnc_delete()` is about to delete `zroot` and `zp2`:\n\n zroot\n \\\n \\\n zp2\n \\\n \\\n zn\n\n`zroot` and `zp2` get freed and the tree collapses:\n\n zn\n\n`zn` now becomes the new `zroot`.\n\n`get_znodes_to_commit()` will now only find `zn`, the new `zroot`, and\n`write_index()` will check its `znode-\u003ecparent` that wrongly points to\nthe already freed `zp1`. `ubifs_copy_hash()` thus gets wrongly called\nwith `znode-\u003ecparent-\u003ezbranch[znode-\u003eiip].hash` that triggers the\nuse-after-free!\n\nFix this by explicitly setting `znode-\u003ecparent` to `NULL` in\n`get_znodes_to_commit()` for the root node. The search for the dirty\nnodes\n---truncated---",
"id": "GHSA-2gwr-frhx-j93x",
"modified": "2025-11-03T21:31:46Z",
"published": "2024-12-27T15:31:50Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2024-53171"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/01d3a2293d7e4edfff96618c15727db7e51f11b6"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/2497479aecebe869d23a0064e0fd1a03e34f0e2a"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/398a91599d263e41c5f95a2fd4ebdb6280b5c6c3"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/4617fb8fc15effe8eda4dd898d4e33eb537a7140"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/4d9807048b851d7a58d5bd089c16254af896e4df"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/74981f7577d183acad1cd58f74c10d263711a215"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/8d8b3f5f4cbfbf6cb0ea4a4d5dc296872b4151eb"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/daac4aa1825de0dbc1a6eede2fa7f9fc53f14223"
},
{
"type": "WEB",
"url": "https://lists.debian.org/debian-lts-announce/2025/03/msg00001.html"
},
{
"type": "WEB",
"url": "https://lists.debian.org/debian-lts-announce/2025/03/msg00002.html"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-2GX9-PFXR-FGH5
Vulnerability from github – Published: 2022-05-14 02:20 – Updated: 2025-04-20 03:40The ReadMNGImage function in coders/png.c in GraphicsMagick 1.3.26 has an out-of-order CloseBlob call, resulting in a use-after-free via a crafted file.
{
"affected": [],
"aliases": [
"CVE-2017-11403"
],
"database_specific": {
"cwe_ids": [
"CWE-416"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2017-07-18T00:29:00Z",
"severity": "HIGH"
},
"details": "The ReadMNGImage function in coders/png.c in GraphicsMagick 1.3.26 has an out-of-order CloseBlob call, resulting in a use-after-free via a crafted file.",
"id": "GHSA-2gx9-pfxr-fgh5",
"modified": "2025-04-20T03:40:59Z",
"published": "2022-05-14T02:20:36Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2017-11403"
},
{
"type": "WEB",
"url": "https://blogs.gentoo.org/ago/2017/07/12/graphicsmagick-use-after-free-in-closeblob-blob-c"
},
{
"type": "WEB",
"url": "https://lists.debian.org/debian-lts-announce/2018/08/msg00002.html"
},
{
"type": "WEB",
"url": "https://usn.ubuntu.com/4206-1"
},
{
"type": "WEB",
"url": "https://www.debian.org/security/2018/dsa-4321"
},
{
"type": "WEB",
"url": "http://hg.code.sf.net/p/graphicsmagick/code/rev/d0a76868ca37"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
}
]
}
Mitigation
Strategy: Language Selection
Choose a language that provides automatic memory management.
Mitigation
Strategy: Attack Surface Reduction
When freeing pointers, be sure to set them to NULL once they are freed. However, the utilization of multiple or complex data structures may lower the usefulness of this strategy.
No CAPEC attack patterns related to this CWE.