CWE-476
AllowedNULL Pointer Dereference
Abstraction: Base · Status: Stable
The product dereferences a pointer that it expects to be valid but is NULL.
6334 vulnerabilities reference this CWE, most recent first.
GHSA-87VP-WCXM-F9G2
Vulnerability from github – Published: 2024-11-19 18:31 – Updated: 2024-11-25 21:30In the Linux kernel, the following vulnerability has been resolved:
idpf: fix idpf_vc_core_init error path
In an event where the platform running the device control plane is rebooted, reset is detected on the driver. It releases all the resources and waits for the reset to complete. Once the reset is done, it tries to build the resources back. At this time if the device control plane is not yet started, then the driver timeouts on the virtchnl message and retries to establish the mailbox again.
In the retry flow, mailbox is deinitialized but the mailbox workqueue is still alive and polling for the mailbox message. This results in accessing the released control queue leading to null-ptr-deref. Fix it by unrolling the work queue cancellation and mailbox deinitialization in the reverse order which they got initialized.
{
"affected": [],
"aliases": [
"CVE-2024-53064"
],
"database_specific": {
"cwe_ids": [
"CWE-476"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2024-11-19T18:15:26Z",
"severity": "MODERATE"
},
"details": "In the Linux kernel, the following vulnerability has been resolved:\n\nidpf: fix idpf_vc_core_init error path\n\nIn an event where the platform running the device control plane\nis rebooted, reset is detected on the driver. It releases\nall the resources and waits for the reset to complete. Once the\nreset is done, it tries to build the resources back. At this\ntime if the device control plane is not yet started, then\nthe driver timeouts on the virtchnl message and retries to\nestablish the mailbox again.\n\nIn the retry flow, mailbox is deinitialized but the mailbox\nworkqueue is still alive and polling for the mailbox message.\nThis results in accessing the released control queue leading to\nnull-ptr-deref. Fix it by unrolling the work queue cancellation\nand mailbox deinitialization in the reverse order which they got\ninitialized.",
"id": "GHSA-87vp-wcxm-f9g2",
"modified": "2024-11-25T21:30:48Z",
"published": "2024-11-19T18:31:06Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2024-53064"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/683fcd90ba22507ebeb1921a26dfe77efff8c266"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/9b58031ff96b84a38d7b73b23c7ecfb2e0557f43"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-889V-7C4R-6CG6
Vulnerability from github – Published: 2024-12-27 15:31 – Updated: 2025-04-18 15:31In the Linux kernel, the following vulnerability has been resolved:
phy: realtek: usb: fix NULL deref in rtk_usb2phy_probe
In rtk_usb2phy_probe() devm_kzalloc() may return NULL but this returned value is not checked.
{
"affected": [],
"aliases": [
"CVE-2024-53205"
],
"database_specific": {
"cwe_ids": [
"CWE-476"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2024-12-27T14:15:28Z",
"severity": "MODERATE"
},
"details": "In the Linux kernel, the following vulnerability has been resolved:\n\nphy: realtek: usb: fix NULL deref in rtk_usb2phy_probe\n\nIn rtk_usb2phy_probe() devm_kzalloc() may return NULL\nbut this returned value is not checked.",
"id": "GHSA-889v-7c4r-6cg6",
"modified": "2025-04-18T15:31:34Z",
"published": "2024-12-27T15:31:51Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2024-53205"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/04e3e9188291a183b27306ddb833722c0d083d6a"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/0b398b6b6c94315fd2ce3658e3cee96539dbd7b7"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/7a784bcdd7e54f0599da3b2360e472238412623e"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/7e2cde1813418b39b5e95d86e10d6701dccf18af"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/fb83c9a08324e37f321ffb400809aa4310387d65"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-88FR-F63H-6PQ4
Vulnerability from github – Published: 2025-09-23 06:30 – Updated: 2026-01-20 21:31In the Linux kernel, the following vulnerability has been resolved:
net: fec: Fix possible NPD in fec_enet_phy_reset_after_clk_enable()
The function of_phy_find_device may return NULL, so we need to take care before dereferencing phy_dev.
{
"affected": [],
"aliases": [
"CVE-2025-39876"
],
"database_specific": {
"cwe_ids": [
"CWE-476"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2025-09-23T06:15:47Z",
"severity": "MODERATE"
},
"details": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: fec: Fix possible NPD in fec_enet_phy_reset_after_clk_enable()\n\nThe function of_phy_find_device may return NULL, so we need to take\ncare before dereferencing phy_dev.",
"id": "GHSA-88fr-f63h-6pq4",
"modified": "2026-01-20T21:31:30Z",
"published": "2025-09-23T06:30:27Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2025-39876"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/03e79de4608bdd48ad6eec272e196124cefaf798"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/20a3433d31c2d2bf70ab0abec75f3136b42ae66c"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/4fe53aaa4271a72fe5fe3e88a45ce01646b68dc5"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/5f1bb554a131e59b28482abad21f691390651752"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/8c60d12bba14dc655d2d948b1dbf390b3ae39cb8"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/93a699d6e92cfdfa9eb9dbb8c653b5322542ca4f"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/eb148d85e126c47d65be34f2a465d69432ca5541"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/fe78891f296ac05bf4e5295c9829ef822f3c32e7"
},
{
"type": "WEB",
"url": "https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-88G6-52PM-GR2W
Vulnerability from github – Published: 2024-10-21 18:30 – Updated: 2025-11-04 00:31In the Linux kernel, the following vulnerability has been resolved:
drm/amd/display: Add null check for 'afb' in amdgpu_dm_plane_handle_cursor_update (v2)
This commit adds a null check for the 'afb' variable in the amdgpu_dm_plane_handle_cursor_update function. Previously, 'afb' was assumed to be null, but was used later in the code without a null check. This could potentially lead to a null pointer dereference.
Changes since v1: - Moved the null check for 'afb' to the line where 'afb' is used. (Alex)
Fixes the below: drivers/gpu/drm/amd/amdgpu/../display/amdgpu_dm/amdgpu_dm_plane.c:1298 amdgpu_dm_plane_handle_cursor_update() error: we previously assumed 'afb' could be null (see line 1252)
{
"affected": [],
"aliases": [
"CVE-2024-49905"
],
"database_specific": {
"cwe_ids": [
"CWE-476"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2024-10-21T18:15:13Z",
"severity": "MODERATE"
},
"details": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/amd/display: Add null check for \u0027afb\u0027 in amdgpu_dm_plane_handle_cursor_update (v2)\n\nThis commit adds a null check for the \u0027afb\u0027 variable in the\namdgpu_dm_plane_handle_cursor_update function. Previously, \u0027afb\u0027 was\nassumed to be null, but was used later in the code without a null check.\nThis could potentially lead to a null pointer dereference.\n\nChanges since v1:\n- Moved the null check for \u0027afb\u0027 to the line where \u0027afb\u0027 is used. (Alex)\n\nFixes the below:\ndrivers/gpu/drm/amd/amdgpu/../display/amdgpu_dm/amdgpu_dm_plane.c:1298 amdgpu_dm_plane_handle_cursor_update() error: we previously assumed \u0027afb\u0027 could be null (see line 1252)",
"id": "GHSA-88g6-52pm-gr2w",
"modified": "2025-11-04T00:31:41Z",
"published": "2024-10-21T18:30:57Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2024-49905"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/75839e2365b666ff4e1b9047e442cab138eac4f6"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/9132882eaae4d21d2fc5843b3308379a481ebdf0"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/bd0e24e5e608ccb9fdda300bb974496d6d8cf57d"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/cd9e9e0852d501f169aa3bb34e4b413d2eb48c37"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/e4e26cbe34d7c1c1db5fb7b3101573c29866439f"
},
{
"type": "WEB",
"url": "https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-88GG-54R4-RJ2G
Vulnerability from github – Published: 2025-01-14 15:30 – Updated: 2025-01-14 15:30A null pointer dereference in FortiOS versions 7.4.0 through 7.4.1, 7.2.0 through 7.2.5, 7.0 all versions, 6.4 all versions , 6.2 all versions and 6.0 all versions allows attacker to trigger a denial of service via a crafted http request.
{
"affected": [],
"aliases": [
"CVE-2023-42785"
],
"database_specific": {
"cwe_ids": [
"CWE-476"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2025-01-14T14:15:27Z",
"severity": "MODERATE"
},
"details": "A null pointer dereference in FortiOS versions 7.4.0 through 7.4.1, 7.2.0 through 7.2.5, 7.0 all versions, 6.4 all versions , 6.2 all versions and 6.0 all versions allows attacker to trigger a denial of service via a crafted http request.",
"id": "GHSA-88gg-54r4-rj2g",
"modified": "2025-01-14T15:30:52Z",
"published": "2025-01-14T15:30:51Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2023-42785"
},
{
"type": "WEB",
"url": "https://fortiguard.fortinet.com/psirt/FG-IR-23-293"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-88P5-6RW5-2VPQ
Vulnerability from github – Published: 2022-05-14 03:26 – Updated: 2022-05-14 03:26In Android before 2018-04-05 or earlier security patch level on Qualcomm Snapdragon Mobile and Snapdragon Wear MDM9206, MDM9650, SD 210/SD 212/SD 205, SD 425, SD 430, SD 450, SD 625, SD 650/52, and SD 835, in some TrustZone API functions, untrusted pointers can be dereferenced.
{
"affected": [],
"aliases": [
"CVE-2015-9200"
],
"database_specific": {
"cwe_ids": [
"CWE-476"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2018-04-18T14:29:00Z",
"severity": "CRITICAL"
},
"details": "In Android before 2018-04-05 or earlier security patch level on Qualcomm Snapdragon Mobile and Snapdragon Wear MDM9206, MDM9650, SD 210/SD 212/SD 205, SD 425, SD 430, SD 450, SD 625, SD 650/52, and SD 835, in some TrustZone API functions, untrusted pointers can be dereferenced.",
"id": "GHSA-88p5-6rw5-2vpq",
"modified": "2022-05-14T03:26:21Z",
"published": "2022-05-14T03:26:21Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2015-9200"
},
{
"type": "WEB",
"url": "https://source.android.com/security/bulletin/2018-04-01"
},
{
"type": "WEB",
"url": "http://www.securityfocus.com/bid/103671"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-88RW-2537-FPF6
Vulnerability from github – Published: 2022-05-24 16:46 – Updated: 2024-04-04 00:49An issue was discovered in GPAC 0.7.1. There is a NULL pointer dereference in the function gf_isom_get_original_format_type at isomedia/drm_sample.c in libgpac.a, as demonstrated by MP4Box.
{
"affected": [],
"aliases": [
"CVE-2019-12482"
],
"database_specific": {
"cwe_ids": [
"CWE-476"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2019-05-30T23:29:00Z",
"severity": "HIGH"
},
"details": "An issue was discovered in GPAC 0.7.1. There is a NULL pointer dereference in the function gf_isom_get_original_format_type at isomedia/drm_sample.c in libgpac.a, as demonstrated by MP4Box.",
"id": "GHSA-88rw-2537-fpf6",
"modified": "2024-04-04T00:49:57Z",
"published": "2022-05-24T16:46:55Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2019-12482"
},
{
"type": "WEB",
"url": "https://github.com/gpac/gpac/issues/1249"
},
{
"type": "WEB",
"url": "https://lists.debian.org/debian-lts-announce/2019/06/msg00030.html"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-892F-JXWR-C43V
Vulnerability from github – Published: 2022-05-14 00:57 – Updated: 2025-04-20 03:45ReadPNMImage in coders/pnm.c in GraphicsMagick 1.3.26 does not ensure the correct number of colors for the XV 332 format, leading to a NULL Pointer Dereference.
{
"affected": [],
"aliases": [
"CVE-2017-14504"
],
"database_specific": {
"cwe_ids": [
"CWE-476"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2017-09-17T19:29:00Z",
"severity": "MODERATE"
},
"details": "ReadPNMImage in coders/pnm.c in GraphicsMagick 1.3.26 does not ensure the correct number of colors for the XV 332 format, leading to a NULL Pointer Dereference.",
"id": "GHSA-892f-jxwr-c43v",
"modified": "2025-04-20T03:45:24Z",
"published": "2022-05-14T00:57:20Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2017-14504"
},
{
"type": "WEB",
"url": "https://lists.debian.org/debian-lts-announce/2018/08/msg00002.html"
},
{
"type": "WEB",
"url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/PF62B5PJA2JDUOCKJGUQO3SPL74BEYSV"
},
{
"type": "WEB",
"url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/WHIKB4TP6KBJWT2UIPWL5MWMG5QXKGEJ"
},
{
"type": "WEB",
"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/PF62B5PJA2JDUOCKJGUQO3SPL74BEYSV"
},
{
"type": "WEB",
"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/WHIKB4TP6KBJWT2UIPWL5MWMG5QXKGEJ"
},
{
"type": "WEB",
"url": "https://sourceforge.net/p/graphicsmagick/bugs/465"
},
{
"type": "WEB",
"url": "https://sourceforge.net/p/graphicsmagick/bugs/466"
},
{
"type": "WEB",
"url": "https://usn.ubuntu.com/4232-1"
},
{
"type": "WEB",
"url": "https://www.debian.org/security/2018/dsa-4321"
},
{
"type": "WEB",
"url": "http://hg.graphicsmagick.org/hg/GraphicsMagick?cmd=changeset%3Bnode=fb09ca6dd22c"
},
{
"type": "WEB",
"url": "http://hg.graphicsmagick.org/hg/GraphicsMagick?cmd=changeset;node=fb09ca6dd22c"
},
{
"type": "WEB",
"url": "http://www.securityfocus.com/bid/100877"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-8932-GR4R-9HPV
Vulnerability from github – Published: 2022-06-17 00:01 – Updated: 2022-06-28 00:00A NULL pointer dereference vulnerability was found in Ghostscript, which occurs when it tries to render a large number of bits in memory. When allocating a buffer device, it relies on an init_device_procs defined for the device that uses it as a prototype that depends upon the number of bits per pixel. For bpp > 64, mem_x_device is used and does not have an init_device_procs defined. This flaw allows an attacker to parse a large number of bits (more than 64 bits per pixel), which triggers a NULL pointer dereference flaw, causing an application to crash.
{
"affected": [],
"aliases": [
"CVE-2022-2085"
],
"database_specific": {
"cwe_ids": [
"CWE-476"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2022-06-16T18:15:00Z",
"severity": "MODERATE"
},
"details": "A NULL pointer dereference vulnerability was found in Ghostscript, which occurs when it tries to render a large number of bits in memory. When allocating a buffer device, it relies on an init_device_procs defined for the device that uses it as a prototype that depends upon the number of bits per pixel. For bpp \u003e 64, mem_x_device is used and does not have an init_device_procs defined. This flaw allows an attacker to parse a large number of bits (more than 64 bits per pixel), which triggers a NULL pointer dereference flaw, causing an application to crash.",
"id": "GHSA-8932-gr4r-9hpv",
"modified": "2022-06-28T00:00:46Z",
"published": "2022-06-17T00:01:22Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2022-2085"
},
{
"type": "WEB",
"url": "https://bugs.ghostscript.com/show_bug.cgi?id=704945"
},
{
"type": "WEB",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2095261"
},
{
"type": "WEB",
"url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ERSZX5LKDWAHZWJYBMP2E2UHOPUCDEGV"
},
{
"type": "WEB",
"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/ERSZX5LKDWAHZWJYBMP2E2UHOPUCDEGV"
},
{
"type": "WEB",
"url": "https://security.gentoo.org/glsa/202211-11"
},
{
"type": "WEB",
"url": "https://security.gentoo.org/glsa/202309-03"
},
{
"type": "WEB",
"url": "http://git.ghostscript.com/?p=ghostpdl.git%3Bh=ae1061d948d88667bdf51d47d918c4684d0f67df"
},
{
"type": "WEB",
"url": "http://git.ghostscript.com/?p=ghostpdl.git;h=ae1061d948d88667bdf51d47d918c4684d0f67df"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-894G-HQ68-4QH8
Vulnerability from github – Published: 2024-07-12 15:31 – Updated: 2026-05-12 12:32In the Linux kernel, the following vulnerability has been resolved:
ipv6: prevent possible NULL dereference in rt6_probe()
syzbot caught a NULL dereference in rt6_probe() [1]
Bail out if __in6_dev_get() returns NULL.
[1] Oops: general protection fault, probably for non-canonical address 0xdffffc00000000cb: 0000 [#1] PREEMPT SMP KASAN PTI KASAN: null-ptr-deref in range [0x0000000000000658-0x000000000000065f] CPU: 1 PID: 22444 Comm: syz-executor.0 Not tainted 6.10.0-rc2-syzkaller-00383-gb8481381d4e2 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/02/2024 RIP: 0010:rt6_probe net/ipv6/route.c:656 [inline] RIP: 0010:find_match+0x8c4/0xf50 net/ipv6/route.c:758 Code: 14 fd f7 48 8b 85 38 ff ff ff 48 c7 45 b0 00 00 00 00 48 8d b8 5c 06 00 00 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 <0f> b6 14 02 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 08 84 d2 0f 85 19 RSP: 0018:ffffc900034af070 EFLAGS: 00010203 RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffc90004521000 RDX: 00000000000000cb RSI: ffffffff8990d0cd RDI: 000000000000065c RBP: ffffc900034af150 R08: 0000000000000005 R09: 0000000000000000 R10: 0000000000000001 R11: 0000000000000002 R12: 000000000000000a R13: 1ffff92000695e18 R14: ffff8880244a1d20 R15: 0000000000000000 FS: 00007f4844a5a6c0(0000) GS:ffff8880b9300000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b31b27000 CR3: 000000002d42c000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: rt6_nh_find_match+0xfa/0x1a0 net/ipv6/route.c:784 nexthop_for_each_fib6_nh+0x26d/0x4a0 net/ipv4/nexthop.c:1496 __find_rr_leaf+0x6e7/0xe00 net/ipv6/route.c:825 find_rr_leaf net/ipv6/route.c:853 [inline] rt6_select net/ipv6/route.c:897 [inline] fib6_table_lookup+0x57e/0xa30 net/ipv6/route.c:2195 ip6_pol_route+0x1cd/0x1150 net/ipv6/route.c:2231 pol_lookup_func include/net/ip6_fib.h:616 [inline] fib6_rule_lookup+0x386/0x720 net/ipv6/fib6_rules.c:121 ip6_route_output_flags_noref net/ipv6/route.c:2639 [inline] ip6_route_output_flags+0x1d0/0x640 net/ipv6/route.c:2651 ip6_dst_lookup_tail.constprop.0+0x961/0x1760 net/ipv6/ip6_output.c:1147 ip6_dst_lookup_flow+0x99/0x1d0 net/ipv6/ip6_output.c:1250 rawv6_sendmsg+0xdab/0x4340 net/ipv6/raw.c:898 inet_sendmsg+0x119/0x140 net/ipv4/af_inet.c:853 sock_sendmsg_nosec net/socket.c:730 [inline] __sock_sendmsg net/socket.c:745 [inline] sock_write_iter+0x4b8/0x5c0 net/socket.c:1160 new_sync_write fs/read_write.c:497 [inline] vfs_write+0x6b6/0x1140 fs/read_write.c:590 ksys_write+0x1f8/0x260 fs/read_write.c:643 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f
{
"affected": [],
"aliases": [
"CVE-2024-40960"
],
"database_specific": {
"cwe_ids": [
"CWE-476"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2024-07-12T13:15:18Z",
"severity": "MODERATE"
},
"details": "In the Linux kernel, the following vulnerability has been resolved:\n\nipv6: prevent possible NULL dereference in rt6_probe()\n\nsyzbot caught a NULL dereference in rt6_probe() [1]\n\nBail out if __in6_dev_get() returns NULL.\n\n[1]\nOops: general protection fault, probably for non-canonical address 0xdffffc00000000cb: 0000 [#1] PREEMPT SMP KASAN PTI\nKASAN: null-ptr-deref in range [0x0000000000000658-0x000000000000065f]\nCPU: 1 PID: 22444 Comm: syz-executor.0 Not tainted 6.10.0-rc2-syzkaller-00383-gb8481381d4e2 #0\nHardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/02/2024\n RIP: 0010:rt6_probe net/ipv6/route.c:656 [inline]\n RIP: 0010:find_match+0x8c4/0xf50 net/ipv6/route.c:758\nCode: 14 fd f7 48 8b 85 38 ff ff ff 48 c7 45 b0 00 00 00 00 48 8d b8 5c 06 00 00 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 \u003c0f\u003e b6 14 02 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 08 84 d2 0f 85 19\nRSP: 0018:ffffc900034af070 EFLAGS: 00010203\nRAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffc90004521000\nRDX: 00000000000000cb RSI: ffffffff8990d0cd RDI: 000000000000065c\nRBP: ffffc900034af150 R08: 0000000000000005 R09: 0000000000000000\nR10: 0000000000000001 R11: 0000000000000002 R12: 000000000000000a\nR13: 1ffff92000695e18 R14: ffff8880244a1d20 R15: 0000000000000000\nFS: 00007f4844a5a6c0(0000) GS:ffff8880b9300000(0000) knlGS:0000000000000000\nCS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033\nCR2: 0000001b31b27000 CR3: 000000002d42c000 CR4: 00000000003506f0\nDR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000\nDR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400\nCall Trace:\n \u003cTASK\u003e\n rt6_nh_find_match+0xfa/0x1a0 net/ipv6/route.c:784\n nexthop_for_each_fib6_nh+0x26d/0x4a0 net/ipv4/nexthop.c:1496\n __find_rr_leaf+0x6e7/0xe00 net/ipv6/route.c:825\n find_rr_leaf net/ipv6/route.c:853 [inline]\n rt6_select net/ipv6/route.c:897 [inline]\n fib6_table_lookup+0x57e/0xa30 net/ipv6/route.c:2195\n ip6_pol_route+0x1cd/0x1150 net/ipv6/route.c:2231\n pol_lookup_func include/net/ip6_fib.h:616 [inline]\n fib6_rule_lookup+0x386/0x720 net/ipv6/fib6_rules.c:121\n ip6_route_output_flags_noref net/ipv6/route.c:2639 [inline]\n ip6_route_output_flags+0x1d0/0x640 net/ipv6/route.c:2651\n ip6_dst_lookup_tail.constprop.0+0x961/0x1760 net/ipv6/ip6_output.c:1147\n ip6_dst_lookup_flow+0x99/0x1d0 net/ipv6/ip6_output.c:1250\n rawv6_sendmsg+0xdab/0x4340 net/ipv6/raw.c:898\n inet_sendmsg+0x119/0x140 net/ipv4/af_inet.c:853\n sock_sendmsg_nosec net/socket.c:730 [inline]\n __sock_sendmsg net/socket.c:745 [inline]\n sock_write_iter+0x4b8/0x5c0 net/socket.c:1160\n new_sync_write fs/read_write.c:497 [inline]\n vfs_write+0x6b6/0x1140 fs/read_write.c:590\n ksys_write+0x1f8/0x260 fs/read_write.c:643\n do_syscall_x64 arch/x86/entry/common.c:52 [inline]\n do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83\n entry_SYSCALL_64_after_hwframe+0x77/0x7f",
"id": "GHSA-894g-hq68-4qh8",
"modified": "2026-05-12T12:32:02Z",
"published": "2024-07-12T15:31:28Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2024-40960"
},
{
"type": "WEB",
"url": "https://cert-portal.siemens.com/productcert/html/ssa-265688.html"
},
{
"type": "WEB",
"url": "https://cert-portal.siemens.com/productcert/html/ssa-355557.html"
},
{
"type": "WEB",
"url": "https://cert-portal.siemens.com/productcert/html/ssa-613116.html"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/1ed9849fdf9a1a617129346b11d2094ca26828dc"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/51ee2f7c30790799d0ec30c0ce0c743e58f046f2"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/569c9d9ea6648d099187527b93982f406ddcebc0"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/6eed6d3cd19ff3cfa83aeceed86da14abaf7417b"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/73e7c8ca6ad76f29b2c99c20845a6f3b203ff0c6"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/b86762dbe19a62e785c189f313cda5b989931f37"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/d66fc4826127c82f99c4033380f8e93833d331c7"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/f0cda984e4e634b221dbf9642b8ecc5b4806b41e"
},
{
"type": "WEB",
"url": "https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
}
]
}
Mitigation MIT-56
For any pointers that could have been modified or provided from a function that can return NULL, check the pointer for NULL before use. When working with a multithreaded or otherwise asynchronous environment, ensure that proper locking APIs are used to lock before the check, and unlock when it has finished [REF-1484].
Mitigation
Select a programming language that is not susceptible to these issues.
Mitigation
Check the results of all functions that return a value and verify that the value is non-null before acting upon it.
Mitigation
Identify all variables and data stores that receive information from external sources, and apply input validation to make sure that they are only initialized to expected values.
Mitigation
Explicitly initialize all variables and other data stores, either during declaration or just before the first usage.
No CAPEC attack patterns related to this CWE.