CWE-476
AllowedNULL Pointer Dereference
Abstraction: Base · Status: Stable
The product dereferences a pointer that it expects to be valid but is NULL.
6340 vulnerabilities reference this CWE, most recent first.
GHSA-QVGP-3PF6-VXC6
Vulnerability from github – Published: 2022-05-14 01:39 – Updated: 2022-05-14 01:39drivers/input/serio/i8042.c in the Linux kernel before 4.12.4 allows attackers to cause a denial of service (NULL pointer dereference and system crash) or possibly have unspecified other impact because the port->exists value can change after it is validated.
{
"affected": [],
"aliases": [
"CVE-2017-18079"
],
"database_specific": {
"cwe_ids": [
"CWE-476"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2018-01-29T05:29:00Z",
"severity": "HIGH"
},
"details": "drivers/input/serio/i8042.c in the Linux kernel before 4.12.4 allows attackers to cause a denial of service (NULL pointer dereference and system crash) or possibly have unspecified other impact because the port-\u003eexists value can change after it is validated.",
"id": "GHSA-qvgp-3pf6-vxc6",
"modified": "2022-05-14T01:39:47Z",
"published": "2022-05-14T01:39:47Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2017-18079"
},
{
"type": "WEB",
"url": "https://github.com/torvalds/linux/commit/340d394a789518018f834ff70f7534fc463d3226"
},
{
"type": "WEB",
"url": "https://usn.ubuntu.com/3655-1"
},
{
"type": "WEB",
"url": "https://usn.ubuntu.com/3655-2"
},
{
"type": "WEB",
"url": "https://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.12.4"
},
{
"type": "WEB",
"url": "http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=340d394a789518018f834ff70f7534fc463d3226"
},
{
"type": "WEB",
"url": "http://www.securityfocus.com/bid/102895"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-QVHJ-42GP-XFMW
Vulnerability from github – Published: 2023-09-05 09:30 – Updated: 2023-11-15 06:30An issue was discovered in FRRouting FRR through 9.0. bgp_nlri_parse_flowspec in bgpd/bgp_flowspec.c processes malformed requests with no attributes, leading to a NULL pointer dereference.
{
"affected": [],
"aliases": [
"CVE-2023-41909"
],
"database_specific": {
"cwe_ids": [
"CWE-476"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2023-09-05T07:15:14Z",
"severity": "HIGH"
},
"details": "An issue was discovered in FRRouting FRR through 9.0. bgp_nlri_parse_flowspec in bgpd/bgp_flowspec.c processes malformed requests with no attributes, leading to a NULL pointer dereference.",
"id": "GHSA-qvhj-42gp-xfmw",
"modified": "2023-11-15T06:30:29Z",
"published": "2023-09-05T09:30:21Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2023-41909"
},
{
"type": "WEB",
"url": "https://github.com/FRRouting/frr/pull/13222/commits/cfd04dcb3e689754a72507d086ba3b9709fc5ed8"
},
{
"type": "WEB",
"url": "https://lists.debian.org/debian-lts-announce/2023/09/msg00020.html"
},
{
"type": "WEB",
"url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/JLG64IF3FU7V76K4TKCCXVNEE6P2VUDO"
},
{
"type": "WEB",
"url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/LMJNX44SMJM25JZO7XWHDQCOB4SNJPIE"
},
{
"type": "WEB",
"url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/WXR6PIVY4SWO7HDT4EY733H4X32SCPM4"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-QVJ3-CMCH-PH88
Vulnerability from github – Published: 2022-05-14 03:56 – Updated: 2022-05-14 03:56drivers/infiniband/ulp/srpt/ib_srpt.c in the Linux kernel before 4.5.1 allows local users to cause a denial of service (NULL pointer dereference and system crash) by using an ABORT_TASK command to abort a device write operation.
{
"affected": [],
"aliases": [
"CVE-2016-6327"
],
"database_specific": {
"cwe_ids": [
"CWE-476"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2016-10-16T21:59:00Z",
"severity": "MODERATE"
},
"details": "drivers/infiniband/ulp/srpt/ib_srpt.c in the Linux kernel before 4.5.1 allows local users to cause a denial of service (NULL pointer dereference and system crash) by using an ABORT_TASK command to abort a device write operation.",
"id": "GHSA-qvj3-cmch-ph88",
"modified": "2022-05-14T03:56:12Z",
"published": "2022-05-14T03:56:12Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2016-6327"
},
{
"type": "WEB",
"url": "https://github.com/torvalds/linux/commit/51093254bf879bc9ce96590400a87897c7498463"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2016:2574"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2016:2584"
},
{
"type": "WEB",
"url": "https://access.redhat.com/security/cve/CVE-2016-6327"
},
{
"type": "WEB",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=1354525"
},
{
"type": "WEB",
"url": "http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=51093254bf879bc9ce96590400a87897c7498463"
},
{
"type": "WEB",
"url": "http://rhn.redhat.com/errata/RHSA-2016-2574.html"
},
{
"type": "WEB",
"url": "http://rhn.redhat.com/errata/RHSA-2016-2584.html"
},
{
"type": "WEB",
"url": "http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.5.1"
},
{
"type": "WEB",
"url": "http://www.openwall.com/lists/oss-security/2016/08/19/5"
},
{
"type": "WEB",
"url": "http://www.securityfocus.com/bid/92549"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-QVJ7-HG6C-8G8H
Vulnerability from github – Published: 2025-01-11 15:30 – Updated: 2025-01-31 18:31In the Linux kernel, the following vulnerability has been resolved:
wifi: rtw89: check return value of ieee80211_probereq_get() for RNR
The return value of ieee80211_probereq_get() might be NULL, so check it before using to avoid NULL pointer access.
Addresses-Coverity-ID: 1529805 ("Dereference null return value")
{
"affected": [],
"aliases": [
"CVE-2024-48873"
],
"database_specific": {
"cwe_ids": [
"CWE-476"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2025-01-11T13:15:22Z",
"severity": "MODERATE"
},
"details": "In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: rtw89: check return value of ieee80211_probereq_get() for RNR\n\nThe return value of ieee80211_probereq_get() might be NULL, so check it\nbefore using to avoid NULL pointer access.\n\nAddresses-Coverity-ID: 1529805 (\"Dereference null return value\")",
"id": "GHSA-qvj7-hg6c-8g8h",
"modified": "2025-01-31T18:31:04Z",
"published": "2025-01-11T15:30:28Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2024-48873"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/1a0f54cb3fea5d087440b2bae03202c445156a8d"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/630d5d8f2bf6b340202b6bc2c05d794bbd8e4c1c"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/7296e5611adb2c619bd7bd3817ddde7ba865ef17"
}
],
"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-QVJC-6J6M-P7GX
Vulnerability from github – Published: 2024-07-29 18:30 – Updated: 2024-07-30 21:31In the Linux kernel, the following vulnerability has been resolved:
drm/xe: Add a NULL check in xe_ttm_stolen_mgr_init
Add an explicit check to ensure that the mgr is not NULL.
{
"affected": [],
"aliases": [
"CVE-2024-42065"
],
"database_specific": {
"cwe_ids": [
"CWE-476"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2024-07-29T16:15:06Z",
"severity": "MODERATE"
},
"details": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/xe: Add a NULL check in xe_ttm_stolen_mgr_init\n\nAdd an explicit check to ensure that the mgr is not NULL.",
"id": "GHSA-qvjc-6j6m-p7gx",
"modified": "2024-07-30T21:31:25Z",
"published": "2024-07-29T18:30:39Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2024-42065"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/a6eff8f9c7e844cb24ccb188ca24abcd59734e74"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/cc796a77985d6af75c9362cb2e73dce4ae3f97cd"
}
],
"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-QVJG-2VF7-962X
Vulnerability from github – Published: 2024-09-27 15:30 – Updated: 2024-10-02 15:30In the Linux kernel, the following vulnerability has been resolved:
iommufd: Require drivers to supply the cache_invalidate_user ops
If drivers don't do this then iommufd will oops invalidation ioctls with something like:
Unable to handle kernel NULL pointer dereference at virtual address 0000000000000000 Mem abort info: ESR = 0x0000000086000004 EC = 0x21: IABT (current EL), IL = 32 bits SET = 0, FnV = 0 EA = 0, S1PTW = 0 FSC = 0x04: level 0 translation fault user pgtable: 4k pages, 48-bit VAs, pgdp=0000000101059000 [0000000000000000] pgd=0000000000000000, p4d=0000000000000000 Internal error: Oops: 0000000086000004 [#1] PREEMPT SMP Modules linked in: CPU: 2 PID: 371 Comm: qemu-system-aar Not tainted 6.8.0-rc7-gde77230ac23a #9 Hardware name: linux,dummy-virt (DT) pstate: 81400809 (Nzcv daif +PAN -UAO -TCO +DIT -SSBS BTYPE=-c) pc : 0x0 lr : iommufd_hwpt_invalidate+0xa4/0x204 sp : ffff800080f3bcc0 x29: ffff800080f3bcf0 x28: ffff0000c369b300 x27: 0000000000000000 x26: 0000000000000000 x25: 0000000000000000 x24: 0000000000000000 x23: 0000000000000000 x22: 00000000c1e334a0 x21: ffff0000c1e334a0 x20: ffff800080f3bd38 x19: ffff800080f3bd58 x18: 0000000000000000 x17: 0000000000000000 x16: 0000000000000000 x15: 0000ffff8240d6d8 x14: 0000000000000000 x13: 0000000000000000 x12: 0000000000000000 x11: 0000000000000000 x10: 0000000000000000 x9 : 0000000000000000 x8 : 0000001000000002 x7 : 0000fffeac1ec950 x6 : 0000000000000000 x5 : ffff800080f3bd78 x4 : 0000000000000003 x3 : 0000000000000002 x2 : 0000000000000000 x1 : ffff800080f3bcc8 x0 : ffff0000c6034d80 Call trace: 0x0 iommufd_fops_ioctl+0x154/0x274 __arm64_sys_ioctl+0xac/0xf0 invoke_syscall+0x48/0x110 el0_svc_common.constprop.0+0x40/0xe0 do_el0_svc+0x1c/0x28 el0_svc+0x34/0xb4 el0t_64_sync_handler+0x120/0x12c el0t_64_sync+0x190/0x194
All existing drivers implement this op for nesting, this is mostly a bisection aid.
{
"affected": [],
"aliases": [
"CVE-2024-46824"
],
"database_specific": {
"cwe_ids": [
"CWE-476"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2024-09-27T13:15:14Z",
"severity": "MODERATE"
},
"details": "In the Linux kernel, the following vulnerability has been resolved:\n\niommufd: Require drivers to supply the cache_invalidate_user ops\n\nIf drivers don\u0027t do this then iommufd will oops invalidation ioctls with\nsomething like:\n\n Unable to handle kernel NULL pointer dereference at virtual address 0000000000000000\n Mem abort info:\n ESR = 0x0000000086000004\n EC = 0x21: IABT (current EL), IL = 32 bits\n SET = 0, FnV = 0\n EA = 0, S1PTW = 0\n FSC = 0x04: level 0 translation fault\n user pgtable: 4k pages, 48-bit VAs, pgdp=0000000101059000\n [0000000000000000] pgd=0000000000000000, p4d=0000000000000000\n Internal error: Oops: 0000000086000004 [#1] PREEMPT SMP\n Modules linked in:\n CPU: 2 PID: 371 Comm: qemu-system-aar Not tainted 6.8.0-rc7-gde77230ac23a #9\n Hardware name: linux,dummy-virt (DT)\n pstate: 81400809 (Nzcv daif +PAN -UAO -TCO +DIT -SSBS BTYPE=-c)\n pc : 0x0\n lr : iommufd_hwpt_invalidate+0xa4/0x204\n sp : ffff800080f3bcc0\n x29: ffff800080f3bcf0 x28: ffff0000c369b300 x27: 0000000000000000\n x26: 0000000000000000 x25: 0000000000000000 x24: 0000000000000000\n x23: 0000000000000000 x22: 00000000c1e334a0 x21: ffff0000c1e334a0\n x20: ffff800080f3bd38 x19: ffff800080f3bd58 x18: 0000000000000000\n x17: 0000000000000000 x16: 0000000000000000 x15: 0000ffff8240d6d8\n x14: 0000000000000000 x13: 0000000000000000 x12: 0000000000000000\n x11: 0000000000000000 x10: 0000000000000000 x9 : 0000000000000000\n x8 : 0000001000000002 x7 : 0000fffeac1ec950 x6 : 0000000000000000\n x5 : ffff800080f3bd78 x4 : 0000000000000003 x3 : 0000000000000002\n x2 : 0000000000000000 x1 : ffff800080f3bcc8 x0 : ffff0000c6034d80\n Call trace:\n 0x0\n iommufd_fops_ioctl+0x154/0x274\n __arm64_sys_ioctl+0xac/0xf0\n invoke_syscall+0x48/0x110\n el0_svc_common.constprop.0+0x40/0xe0\n do_el0_svc+0x1c/0x28\n el0_svc+0x34/0xb4\n el0t_64_sync_handler+0x120/0x12c\n el0t_64_sync+0x190/0x194\n\nAll existing drivers implement this op for nesting, this is mostly a\nbisection aid.",
"id": "GHSA-qvjg-2vf7-962x",
"modified": "2024-10-02T15:30:37Z",
"published": "2024-09-27T15:30:33Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2024-46824"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/89827a4de802765b1ebb401fc1e73a90108c7520"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/a11dda723c6493bb1853bbc61c093377f96e2d47"
}
],
"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-QVMC-288X-8MFH
Vulnerability from github – Published: 2023-08-08 12:30 – Updated: 2024-06-11 12:31A vulnerability has been identified in Parasolid V34.1 (All versions < V34.1.258), Parasolid V35.0 (All versions < V35.0.254), Parasolid V35.1 (All versions < V35.1.171), Teamcenter Visualization V14.1 (All versions), Teamcenter Visualization V14.2 (All versions < V14.2.0.6), Teamcenter Visualization V14.3 (All versions). The affected applications contain null pointer dereference while parsing specially crafted X_T files. This could allow an attacker to execute code in the context of the current process.
{
"affected": [],
"aliases": [
"CVE-2023-38524"
],
"database_specific": {
"cwe_ids": [
"CWE-476"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2023-08-08T10:15:15Z",
"severity": "HIGH"
},
"details": "A vulnerability has been identified in Parasolid V34.1 (All versions \u003c V34.1.258), Parasolid V35.0 (All versions \u003c V35.0.254), Parasolid V35.1 (All versions \u003c V35.1.171), Teamcenter Visualization V14.1 (All versions), Teamcenter Visualization V14.2 (All versions \u003c V14.2.0.6), Teamcenter Visualization V14.3 (All versions). The affected applications contain null pointer dereference while parsing specially crafted X_T files. This could allow an attacker to execute code in the context of the current process.",
"id": "GHSA-qvmc-288x-8mfh",
"modified": "2024-06-11T12:31:00Z",
"published": "2023-08-08T12:30:20Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2023-38524"
},
{
"type": "WEB",
"url": "https://cert-portal.siemens.com/productcert/html/ssa-407785.html"
},
{
"type": "WEB",
"url": "https://cert-portal.siemens.com/productcert/pdf/ssa-407785.pdf"
}
],
"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:L",
"type": "CVSS_V3"
}
]
}
GHSA-QVRW-VPG6-FX6M
Vulnerability from github – Published: 2026-06-26 21:32 – Updated: 2026-07-08 06:31In the Linux kernel, the following vulnerability has been resolved:
net: airoha: Move ndesc initialization at end of airoha_qdma_init_rx_queue()
If queue entry or DMA descriptor list allocation fails in airoha_qdma_init_rx_queue routine, airoha_qdma_cleanup() will trigger a NULL pointer dereference running netif_napi_del() for RX queue NAPIs since netif_napi_add() has never been executed to this particular RX NAPI. The issue is due to the early ndesc initialization in airoha_qdma_init_rx_queue() since airoha_qdma_cleanup() relies on ndesc value to check if the queue is properly initialized. Fix the issue moving ndesc initialization at end of airoha_qdma_init_tx routine. Move page_pool allocation after descriptor list allocation in order to avoid memory leaks if desc allocation fails.
{
"affected": [],
"aliases": [
"CVE-2026-53298"
],
"database_specific": {
"cwe_ids": [
"CWE-476"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-06-26T20:17:23Z",
"severity": "MODERATE"
},
"details": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: airoha: Move ndesc initialization at end of airoha_qdma_init_rx_queue()\n\nIf queue entry or DMA descriptor list allocation fails in\nairoha_qdma_init_rx_queue routine, airoha_qdma_cleanup() will trigger a\nNULL pointer dereference running netif_napi_del() for RX queue NAPIs\nsince netif_napi_add() has never been executed to this particular RX NAPI.\nThe issue is due to the early ndesc initialization in\nairoha_qdma_init_rx_queue() since airoha_qdma_cleanup() relies on ndesc\nvalue to check if the queue is properly initialized. Fix the issue moving\nndesc initialization at end of airoha_qdma_init_tx routine.\nMove page_pool allocation after descriptor list allocation in order to\navoid memory leaks if desc allocation fails.",
"id": "GHSA-qvrw-vpg6-fx6m",
"modified": "2026-07-08T06:31:35Z",
"published": "2026-06-26T21:32:17Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-53298"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/14dc48e5ba73d5c69559bf1a1a6884f7843aade7"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/379050947a1828826ad7ea50c95245a56929b35a"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/4d4acfa348a1d8c0941004823662ede0fdb5dea5"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/d36be272adda7f313e39dd118086955d993bf6a7"
}
],
"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-QVXH-98Q9-X4J8
Vulnerability from github – Published: 2026-06-24 18:32 – Updated: 2026-07-21 18:30In the Linux kernel, the following vulnerability has been resolved:
dm cache: fix null-deref with concurrent writes in passthrough mode
In passthrough mode, when dm-cache starts to invalidate a cache entry and bio prison cell lock fails due to concurrent write to the same cached block, mg->cell remains NULL. The error path in invalidate_complete() attempts to unlock and free the cell unconditionally, causing a NULL pointer dereference:
KASAN: null-ptr-deref in range [0x0000000000000000-0x0000000000000007] CPU: 0 UID: 0 PID: 134 Comm: fio Not tainted 6.19.0-rc7 #3 PREEMPT RIP: 0010:dm_cell_unlock_v2+0x3f/0x210 Call Trace: invalidate_complete+0xef/0x430 map_bio+0x130f/0x1a10 cache_map+0x320/0x6b0 __map_bio+0x458/0x510 dm_submit_bio+0x40e/0x16d0 __submit_bio+0x419/0x870
Reproduce steps:
- Create a cache device
dmsetup create cmeta --table "0 8192 linear /dev/sdc 0" dmsetup create cdata --table "0 131072 linear /dev/sdc 8192" dmsetup create corig --table "0 262144 linear /dev/sdc 262144" dd if=/dev/zero of=/dev/mapper/cmeta bs=4k count=1 oflag=direct dmsetup create cache --table "0 262144 cache /dev/mapper/cmeta \ /dev/mapper/cdata /dev/mapper/corig 128 2 metadata2 writethrough smq 0"
- Promote the first data block into cache
fio --filename=/dev/mapper/cache --name=populate --rw=write --bs=4k \ --direct=1 --size=64k
- Reload the cache into passthrough mode
dmsetup suspend cache dmsetup reload cache --table "0 262144 cache /dev/mapper/cmeta \ /dev/mapper/cdata /dev/mapper/corig 128 2 metadata2 passthrough smq 0" dmsetup resume cache
- Write to the first cached block concurrently
fio --filename=/dev/mapper/cache --name test --rw=randwrite --bs=4k \ --randrepeat=0 --direct=1 --numjobs=2 --size 64k
Fix by checking if mg->cell is valid before attempting to unlock it.
{
"affected": [],
"aliases": [
"CVE-2026-53064"
],
"database_specific": {
"cwe_ids": [
"CWE-476"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-06-24T17:17:19Z",
"severity": "MODERATE"
},
"details": "In the Linux kernel, the following vulnerability has been resolved:\n\ndm cache: fix null-deref with concurrent writes in passthrough mode\n\nIn passthrough mode, when dm-cache starts to invalidate a cache\nentry and bio prison cell lock fails due to concurrent write to\nthe same cached block, mg-\u003ecell remains NULL. The error path in\ninvalidate_complete() attempts to unlock and free the cell\nunconditionally, causing a NULL pointer dereference:\n\nKASAN: null-ptr-deref in range [0x0000000000000000-0x0000000000000007]\nCPU: 0 UID: 0 PID: 134 Comm: fio Not tainted 6.19.0-rc7 #3 PREEMPT\nRIP: 0010:dm_cell_unlock_v2+0x3f/0x210\n\u003csnip\u003e\nCall Trace:\n invalidate_complete+0xef/0x430\n map_bio+0x130f/0x1a10\n cache_map+0x320/0x6b0\n __map_bio+0x458/0x510\n dm_submit_bio+0x40e/0x16d0\n __submit_bio+0x419/0x870\n\u003csnip\u003e\n\nReproduce steps:\n\n1. Create a cache device\n\ndmsetup create cmeta --table \"0 8192 linear /dev/sdc 0\"\ndmsetup create cdata --table \"0 131072 linear /dev/sdc 8192\"\ndmsetup create corig --table \"0 262144 linear /dev/sdc 262144\"\ndd if=/dev/zero of=/dev/mapper/cmeta bs=4k count=1 oflag=direct\ndmsetup create cache --table \"0 262144 cache /dev/mapper/cmeta \\\n/dev/mapper/cdata /dev/mapper/corig 128 2 metadata2 writethrough smq 0\"\n\n2. Promote the first data block into cache\n\nfio --filename=/dev/mapper/cache --name=populate --rw=write --bs=4k \\\n--direct=1 --size=64k\n\n3. Reload the cache into passthrough mode\n\ndmsetup suspend cache\ndmsetup reload cache --table \"0 262144 cache /dev/mapper/cmeta \\\n/dev/mapper/cdata /dev/mapper/corig 128 2 metadata2 passthrough smq 0\"\ndmsetup resume cache\n\n4. Write to the first cached block concurrently\n\nfio --filename=/dev/mapper/cache --name test --rw=randwrite --bs=4k \\\n--randrepeat=0 --direct=1 --numjobs=2 --size 64k\n\nFix by checking if mg-\u003ecell is valid before attempting to unlock it.",
"id": "GHSA-qvxh-98q9-x4j8",
"modified": "2026-07-21T18:30:38Z",
"published": "2026-06-24T18:32:45Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-53064"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/01264a6a3a3ad7ac1d73443299cd5a9568002454"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/0aa745fea1f8dc81bcdd0a45e215b6706727b482"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/25dcc1989c194ba2b5fb6d03cbb9b83814ac0d15"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/7d1f98d668ee34c1d15bdc0420fdd062f24a27c0"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/a2635d541a93fd111e743cf14b6275dc81be2abc"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/c7fb6bc864c4910b344dafa36dd5028e9b980768"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/df3b8ef06cc62de4fca5d2108e285085b3cffd44"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/ee38fb00e1a80f46a4990e38f25ecb04ae7b7417"
}
],
"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-QW32-4RHP-3985
Vulnerability from github – Published: 2024-06-17 21:31 – Updated: 2024-11-18 16:26A vulnerability was found in GPAC 2.5-DEV-rev228-g11067ea92-master and classified as problematic. Affected by this issue is the function swf_svg_add_iso_sample of the file src/filters/load_text.c of the component MP4Box. The manipulation leads to null pointer dereference. The attack needs to be approached locally. The exploit has been disclosed to the public and may be used. The patch is identified as 31e499d310a48bd17c8b055a0bfe0fe35887a7cd. It is recommended to apply a patch to fix this issue. VDB-268790 is the identifier assigned to this vulnerability.
{
"affected": [],
"aliases": [
"CVE-2024-6062"
],
"database_specific": {
"cwe_ids": [
"CWE-476"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2024-06-17T20:15:15Z",
"severity": "MODERATE"
},
"details": "A vulnerability was found in GPAC 2.5-DEV-rev228-g11067ea92-master and classified as problematic. Affected by this issue is the function swf_svg_add_iso_sample of the file src/filters/load_text.c of the component MP4Box. The manipulation leads to null pointer dereference. The attack needs to be approached locally. The exploit has been disclosed to the public and may be used. The patch is identified as 31e499d310a48bd17c8b055a0bfe0fe35887a7cd. It is recommended to apply a patch to fix this issue. VDB-268790 is the identifier assigned to this vulnerability.",
"id": "GHSA-qw32-4rhp-3985",
"modified": "2024-11-18T16:26:44Z",
"published": "2024-06-17T21:31:10Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2024-6062"
},
{
"type": "WEB",
"url": "https://github.com/gpac/gpac/issues/2872"
},
{
"type": "WEB",
"url": "https://github.com/gpac/gpac/commit/31e499d310a48bd17c8b055a0bfe0fe35887a7cd"
},
{
"type": "WEB",
"url": "https://github.com/user-attachments/files/15801126/poc2.zip"
},
{
"type": "WEB",
"url": "https://vuldb.com/?ctiid.268790"
},
{
"type": "WEB",
"url": "https://vuldb.com/?id.268790"
},
{
"type": "WEB",
"url": "https://vuldb.com/?submit.356314"
}
],
"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:L",
"type": "CVSS_V3"
},
{
"score": "CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X",
"type": "CVSS_V4"
}
]
}
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.