298 lines
16 KiB
JSON
298 lines
16 KiB
JSON
{
|
|
"dataType": "CVE_RECORD",
|
|
"dataVersion": "5.2",
|
|
"cveMetadata": {
|
|
"cveId": "CVE-2023-53484",
|
|
"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
|
|
"state": "PUBLISHED",
|
|
"assignerShortName": "Linux",
|
|
"dateReserved": "2025-10-01T11:39:39.402Z",
|
|
"datePublished": "2025-10-01T11:42:52.590Z",
|
|
"dateUpdated": "2026-10-15T21:41:28.750Z"
|
|
},
|
|
"containers": {
|
|
"cna": {
|
|
"providerMetadata": {
|
|
"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
|
|
"shortName": "Linux",
|
|
"dateUpdated": "2026-08-05T09:14:18.959Z"
|
|
},
|
|
"descriptions": [
|
|
{
|
|
"lang": "en",
|
|
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nlib: cpu_rmap: Avoid use after free on rmap->obj array entries\n\nWhen calling irq_set_affinity_notifier() with NULL at the notify\nargument, it will cause freeing of the glue pointer in the\ncorresponding array entry but will leave the pointer in the array. A\nsubsequent call to free_irq_cpu_rmap() will try to free this entry again\nleading to possible use after free.\n\nFix that by setting NULL to the array entry and checking that we have\nnon-zero at the array entry when iterating over the array in\nfree_irq_cpu_rmap().\n\nThe current code does not suffer from this since there are no cases\nwhere irq_set_affinity_notifier(irq, NULL) (note the NULL passed for the\nnotify arg) is called, followed by a call to free_irq_cpu_rmap() so we\ndon't hit and issue. Subsequent patches in this series excersize this\nflow, hence the required fix."
|
|
}
|
|
],
|
|
"metrics": [
|
|
{
|
|
"cvssV3_1": {
|
|
"version": "3.1",
|
|
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
|
|
"baseScore": 7.8,
|
|
"baseSeverity": "HIGH"
|
|
},
|
|
"scenarios": [
|
|
{
|
|
"lang": "en",
|
|
"value": "AV:L - The vulnerable code is reached only through local device-configuration and teardown paths (`ethtool -L`/set-channels, interface down, devlink SF/VF teardown, driver unbind) that drive `irq_cpu_rmap_remove()` and `free_irq_cpu_rmap()`. No remote packet or protocol data reaches `lib/cpu_rmap.c`; the RFS receive path only reads `rmap->near[]`, not the freed glue objects.\nAC:L - The use-after-free is deterministic and requires no race — releasing an IRQ vector leaves a stale `rmap->obj[]` entry that the subsequent `free_irq_cpu_rmap()` walk unconditionally dereferences, and the attacker fully controls the ordering and timing of both steps. `CONFIG_RFS_ACCEL` is `default y` (depends on `RPS`), so the required configuration is the norm on distro kernels, and the unbounded window between free and walk lets the attacker reliably groom the `kmalloc-64` slab.\nPR:L - Triggering requires CAP_NET_ADMIN over the affected netdev (ethtool set-channels, link down, devlink SF removal), which per kernel-CNA guidance scores as Low rather than High. In common SR-IOV/container deployments an mlx5 VF netdev is delegated into a network namespace owned by a user namespace, giving an otherwise unprivileged container-local user exactly this capability over the device.\nUI:N - No victim action is needed; the attacker performs both the IRQ-vector release and the subsequent rmap teardown entirely on their own via device reconfiguration.\nS:U - The freed object, the corrupted state, and the resulting impact are all within the kernel's own security authority; no VM, IOMMU, or sandbox boundary is crossed.\nC:H - This is a use-after-free on a `kmalloc-64` GFP_KERNEL object with an attacker-paced reclaim window, so the freed `struct irq_glue` can be reoccupied with sprayed data; the attacker-controlled `notify.irq` then selects an arbitrary `irq_desc`, and the resulting refcount underflow and indirect `->release` call chain can be leveraged into arbitrary kernel memory disclosure.\nI:H - After reclaiming the freed glue, `irq_set_affinity_notifier(glue->notify.irq, NULL)` performs an arbitrary IRQ-descriptor lookup and issues spurious `kref_put(&old_notify->kref, old_notify->release)` calls on a live notifier, producing refcount underflow, premature free, and an indirect call through a function pointer — a control-flow hijack primitive rather than a mere crash.\nA:H - Even unweaponized, dereferencing the freed glue and passing garbage to `irq_set_affinity_notifier()` corrupts unrelated IRQ descriptor state and oopses/panics the kernel during device teardown, and the double kref_put can prematurely free the cpu_rmap itself."
|
|
}
|
|
]
|
|
}
|
|
],
|
|
"affected": [
|
|
{
|
|
"product": "Linux",
|
|
"vendor": "Linux",
|
|
"defaultStatus": "unaffected",
|
|
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
|
|
"programFiles": [
|
|
"lib/cpu_rmap.c"
|
|
],
|
|
"versions": [
|
|
{
|
|
"version": "896f97ea95c1d29c0520ee0766b66b7f64cb967c",
|
|
"lessThan": "981f339d2905b6a92ef59358158b326493aecac5",
|
|
"status": "affected",
|
|
"versionType": "git"
|
|
},
|
|
{
|
|
"version": "896f97ea95c1d29c0520ee0766b66b7f64cb967c",
|
|
"lessThan": "d1308bd0b24cb1d78fa2747d5fa3e055cc628a48",
|
|
"status": "affected",
|
|
"versionType": "git"
|
|
},
|
|
{
|
|
"version": "896f97ea95c1d29c0520ee0766b66b7f64cb967c",
|
|
"lessThan": "cc2d2b3dbfb0ba57bc027fb7e1121250c50e4000",
|
|
"status": "affected",
|
|
"versionType": "git"
|
|
},
|
|
{
|
|
"version": "896f97ea95c1d29c0520ee0766b66b7f64cb967c",
|
|
"lessThan": "f748e15253833b771acbede14ea98f50831ac289",
|
|
"status": "affected",
|
|
"versionType": "git"
|
|
},
|
|
{
|
|
"version": "896f97ea95c1d29c0520ee0766b66b7f64cb967c",
|
|
"lessThan": "c6ed54dd90698dc0744d669524cc1c122ded8a16",
|
|
"status": "affected",
|
|
"versionType": "git"
|
|
},
|
|
{
|
|
"version": "896f97ea95c1d29c0520ee0766b66b7f64cb967c",
|
|
"lessThan": "c9115f49cf260d24d8b5f2d9a4b63cb31a627bb4",
|
|
"status": "affected",
|
|
"versionType": "git"
|
|
},
|
|
{
|
|
"version": "896f97ea95c1d29c0520ee0766b66b7f64cb967c",
|
|
"lessThan": "67bca5f1d644f4e79b694abd8052a177de81c37f",
|
|
"status": "affected",
|
|
"versionType": "git"
|
|
},
|
|
{
|
|
"version": "896f97ea95c1d29c0520ee0766b66b7f64cb967c",
|
|
"lessThan": "4e0473f1060aa49621d40a113afde24818101d37",
|
|
"status": "affected",
|
|
"versionType": "git"
|
|
}
|
|
]
|
|
},
|
|
{
|
|
"product": "Linux",
|
|
"vendor": "Linux",
|
|
"defaultStatus": "affected",
|
|
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
|
|
"programFiles": [
|
|
"lib/cpu_rmap.c"
|
|
],
|
|
"versions": [
|
|
{
|
|
"version": "3.8",
|
|
"status": "affected"
|
|
},
|
|
{
|
|
"version": "0",
|
|
"lessThan": "3.8",
|
|
"status": "unaffected",
|
|
"versionType": "semver"
|
|
},
|
|
{
|
|
"version": "4.14.316",
|
|
"lessThanOrEqual": "4.14.*",
|
|
"status": "unaffected",
|
|
"versionType": "semver"
|
|
},
|
|
{
|
|
"version": "4.19.284",
|
|
"lessThanOrEqual": "4.19.*",
|
|
"status": "unaffected",
|
|
"versionType": "semver"
|
|
},
|
|
{
|
|
"version": "5.4.244",
|
|
"lessThanOrEqual": "5.4.*",
|
|
"status": "unaffected",
|
|
"versionType": "semver"
|
|
},
|
|
{
|
|
"version": "5.10.181",
|
|
"lessThanOrEqual": "5.10.*",
|
|
"status": "unaffected",
|
|
"versionType": "semver"
|
|
},
|
|
{
|
|
"version": "5.15.113",
|
|
"lessThanOrEqual": "5.15.*",
|
|
"status": "unaffected",
|
|
"versionType": "semver"
|
|
},
|
|
{
|
|
"version": "6.1.30",
|
|
"lessThanOrEqual": "6.1.*",
|
|
"status": "unaffected",
|
|
"versionType": "semver"
|
|
},
|
|
{
|
|
"version": "6.3.4",
|
|
"lessThanOrEqual": "6.3.*",
|
|
"status": "unaffected",
|
|
"versionType": "semver"
|
|
},
|
|
{
|
|
"version": "6.4",
|
|
"lessThanOrEqual": "*",
|
|
"status": "unaffected",
|
|
"versionType": "original_commit_for_fix"
|
|
}
|
|
]
|
|
}
|
|
],
|
|
"cpeApplicability": [
|
|
{
|
|
"nodes": [
|
|
{
|
|
"operator": "OR",
|
|
"negate": false,
|
|
"cpeMatch": [
|
|
{
|
|
"vulnerable": true,
|
|
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
|
|
"versionStartIncluding": "3.8",
|
|
"versionEndExcluding": "4.14.316"
|
|
},
|
|
{
|
|
"vulnerable": true,
|
|
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
|
|
"versionStartIncluding": "3.8",
|
|
"versionEndExcluding": "4.19.284"
|
|
},
|
|
{
|
|
"vulnerable": true,
|
|
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
|
|
"versionStartIncluding": "3.8",
|
|
"versionEndExcluding": "5.4.244"
|
|
},
|
|
{
|
|
"vulnerable": true,
|
|
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
|
|
"versionStartIncluding": "3.8",
|
|
"versionEndExcluding": "5.10.181"
|
|
},
|
|
{
|
|
"vulnerable": true,
|
|
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
|
|
"versionStartIncluding": "3.8",
|
|
"versionEndExcluding": "5.15.113"
|
|
},
|
|
{
|
|
"vulnerable": true,
|
|
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
|
|
"versionStartIncluding": "3.8",
|
|
"versionEndExcluding": "6.1.30"
|
|
},
|
|
{
|
|
"vulnerable": true,
|
|
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
|
|
"versionStartIncluding": "3.8",
|
|
"versionEndExcluding": "6.3.4"
|
|
},
|
|
{
|
|
"vulnerable": true,
|
|
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
|
|
"versionStartIncluding": "3.8",
|
|
"versionEndExcluding": "6.4"
|
|
}
|
|
]
|
|
}
|
|
]
|
|
}
|
|
],
|
|
"references": [
|
|
{
|
|
"url": "https://git.kernel.org/stable/c/981f339d2905b6a92ef59358158b326493aecac5"
|
|
},
|
|
{
|
|
"url": "https://git.kernel.org/stable/c/d1308bd0b24cb1d78fa2747d5fa3e055cc628a48"
|
|
},
|
|
{
|
|
"url": "https://git.kernel.org/stable/c/cc2d2b3dbfb0ba57bc027fb7e1121250c50e4000"
|
|
},
|
|
{
|
|
"url": "https://git.kernel.org/stable/c/f748e15253833b771acbede14ea98f50831ac289"
|
|
},
|
|
{
|
|
"url": "https://git.kernel.org/stable/c/c6ed54dd90698dc0744d669524cc1c122ded8a16"
|
|
},
|
|
{
|
|
"url": "https://git.kernel.org/stable/c/c9115f49cf260d24d8b5f2d9a4b63cb31a627bb4"
|
|
},
|
|
{
|
|
"url": "https://git.kernel.org/stable/c/67bca5f1d644f4e79b694abd8052a177de81c37f"
|
|
},
|
|
{
|
|
"url": "https://git.kernel.org/stable/c/4e0473f1060aa49621d40a113afde24818101d37"
|
|
}
|
|
],
|
|
"title": "lib: cpu_rmap: Avoid use after free on rmap->obj array entries",
|
|
"x_generator": {
|
|
"engine": "bippy-1.2.0"
|
|
}
|
|
},
|
|
"adp": [
|
|
{
|
|
"metrics": [
|
|
{
|
|
"other": {
|
|
"type": "ssvc",
|
|
"content": {
|
|
"id": "CVE-2023-53484",
|
|
"role": "CISA Coordinator",
|
|
"options": [
|
|
{
|
|
"Exploitation": "none"
|
|
},
|
|
{
|
|
"Automatable": "no"
|
|
},
|
|
{
|
|
"Technical Impact": "total"
|
|
}
|
|
],
|
|
"version": "2.0.3",
|
|
"timestamp": "2026-10-15T21:34:49.139376Z"
|
|
}
|
|
}
|
|
}
|
|
],
|
|
"title": "CISA ADP Vulnrichment",
|
|
"providerMetadata": {
|
|
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
|
|
"shortName": "CISA-ADP",
|
|
"dateUpdated": "2026-10-15T21:41:28.750Z"
|
|
}
|
|
}
|
|
]
|
|
}
|
|
} |