256 lines
14 KiB
JSON
256 lines
14 KiB
JSON
{
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"dataType": "CVE_RECORD",
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"dataVersion": "5.2",
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"cveMetadata": {
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"cveId": "CVE-2023-54156",
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"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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"state": "PUBLISHED",
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"assignerShortName": "Linux",
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"dateReserved": "2025-12-24T13:02:52.530Z",
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"datePublished": "2025-12-24T13:07:06.043Z",
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"dateUpdated": "2026-10-15T21:41:40.463Z"
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},
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"containers": {
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"cna": {
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"providerMetadata": {
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"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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"shortName": "Linux",
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"dateUpdated": "2026-08-05T09:17:42.126Z"
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},
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"descriptions": [
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{
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"lang": "en",
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"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nsfc: fix crash when reading stats while NIC is resetting\n\nefx_net_stats() (.ndo_get_stats64) can be called during an ethtool\n selftest, during which time nic_data->mc_stats is NULL as the NIC has\n been fini'd. In this case do not attempt to fetch the latest stats\n from the hardware, else we will crash on a NULL dereference:\n BUG: kernel NULL pointer dereference, address: 0000000000000038\n RIP efx_nic_update_stats\n abridged calltrace:\n efx_ef10_update_stats_pf\n efx_net_stats\n dev_get_stats\n dev_seq_printf_stats\nSkipping the read is safe, we will simply give out stale stats.\nTo ensure that the free in efx_ef10_fini_nic() does not race against\n efx_ef10_update_stats_pf(), which could cause a TOCTTOU bug, take the\n efx->stats_lock in fini_nic (it is already held across update_stats)."
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}
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],
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"metrics": [
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{
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"cvssV3_1": {
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"version": "3.1",
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"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
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"baseScore": 7.8,
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"baseSeverity": "HIGH"
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},
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"scenarios": [
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{
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"lang": "en",
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"value": "AV:L - The vulnerable code is reached only through local interfaces that read netdev statistics — /proc/net/dev, /sys/class/net/*/statistics/*, rtnetlink RTM_GETLINK, or ethtool -S — all requiring local access to the host. No remote peer can drive `.ndo_get_stats64`.\nAC:L - The attacker fully controls the read side and the vulnerable state persists for the entire duration of a reset or offline BIST selftest (seconds), so a simple polling loop hits it deterministically rather than winning a tight race; in a delegated-netns/SR-IOV deployment the attacker holds CAP_NET_ADMIN over the port and drives both sides (ethtool -t plus concurrent stats reads).\nPR:L - Reading /proc/net/dev or the sysfs statistics files requires no capability whatsoever, only an unprivileged local account; where the attacker also triggers the reset, CAP_NET_ADMIN over a namespace-delegated port is obtainable by an unprivileged user and counts as Low per kernel scoring guidance.\nUI:N - No victim action is needed — the attacker polls statistics continuously and the crash fires on the next reset, and in the strongest scenario the attacker initiates the reset themselves.\nS:U - The corruption and crash are confined to kernel memory within the same security authority; no VM, IOMMU, or sandbox boundary is crossed.\nC:H - The unsynchronized kfree lets `efx_nic_update_stats()` read a freed (and potentially reallocated) kmalloc-1k object and export its 16/32/64-bit contents to unprivileged userspace as network stat counters, disclosing freed kernel heap data; UAF read primitives are scored High.\nI:H - In the same race `efx_nic_copy_stats()` memcpy()s ~768 bytes of DMA'd MAC counters into the freed buffer, repeating for up to 10 ms in its retry loop, giving a use-after-free write into a sprayable slab with counter values an attacker can influence by shaping traffic to the NIC.\nA:H - The documented outcome is a kernel NULL pointer dereference oops at 0x38 in `efx_nic_update_stats()`, taken while holding `spin_lock_bh(&efx->stats_lock)` — the lock is then never released, so every later stats reader spins with BH disabled, producing a hang on top of the oops (or an immediate panic where panic_on_oops is set)."
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}
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]
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}
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],
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"affected": [
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{
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"product": "Linux",
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"vendor": "Linux",
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"defaultStatus": "unaffected",
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"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
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"programFiles": [
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"drivers/net/ethernet/sfc/ef10.c"
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],
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"versions": [
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{
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"version": "d3142c193dca9a2f6878f4128ce1aaf221bb3f99",
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"lessThan": "cb1aa7cc562cab6a87ea33574c8c65f2d2fd7aeb",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "d3142c193dca9a2f6878f4128ce1aaf221bb3f99",
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"lessThan": "91f4ef204e731565afdc6c2a7fcf509a3fd6fd67",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "d3142c193dca9a2f6878f4128ce1aaf221bb3f99",
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"lessThan": "446f5567934331923d0aec4ce045e4ecb0174aae",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "d3142c193dca9a2f6878f4128ce1aaf221bb3f99",
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"lessThan": "470152d76b3ed107d172ea46acc4bfa941f20b4b",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "d3142c193dca9a2f6878f4128ce1aaf221bb3f99",
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"lessThan": "aba32b4c58112960c0c708703ca6b44dc8944082",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "d3142c193dca9a2f6878f4128ce1aaf221bb3f99",
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"lessThan": "d1b355438b8325a486f087e506d412c4e852f37b",
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"status": "affected",
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"versionType": "git"
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}
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]
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},
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{
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"product": "Linux",
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"vendor": "Linux",
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"defaultStatus": "affected",
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"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
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"programFiles": [
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"drivers/net/ethernet/sfc/ef10.c"
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],
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"versions": [
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{
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"version": "5.9",
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"status": "affected"
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},
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{
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"version": "0",
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"lessThan": "5.9",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "5.10.188",
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"lessThanOrEqual": "5.10.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "5.15.121",
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"lessThanOrEqual": "5.15.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "6.1.39",
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"lessThanOrEqual": "6.1.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "6.3.13",
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"lessThanOrEqual": "6.3.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "6.4.4",
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"lessThanOrEqual": "6.4.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "6.5",
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"lessThanOrEqual": "*",
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"status": "unaffected",
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"versionType": "original_commit_for_fix"
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}
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]
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}
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],
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"cpeApplicability": [
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{
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"nodes": [
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{
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"operator": "OR",
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"negate": false,
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"cpeMatch": [
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "5.9",
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"versionEndExcluding": "5.10.188"
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},
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "5.9",
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"versionEndExcluding": "5.15.121"
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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}
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]
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}
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],
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"references": [
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{
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"url": "https://git.kernel.org/stable/c/cb1aa7cc562cab6a87ea33574c8c65f2d2fd7aeb"
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},
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{
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"url": "https://git.kernel.org/stable/c/91f4ef204e731565afdc6c2a7fcf509a3fd6fd67"
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},
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{
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"url": "https://git.kernel.org/stable/c/446f5567934331923d0aec4ce045e4ecb0174aae"
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},
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{
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"url": "https://git.kernel.org/stable/c/470152d76b3ed107d172ea46acc4bfa941f20b4b"
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},
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{
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"url": "https://git.kernel.org/stable/c/aba32b4c58112960c0c708703ca6b44dc8944082"
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},
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{
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"url": "https://git.kernel.org/stable/c/d1b355438b8325a486f087e506d412c4e852f37b"
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}
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],
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"title": "sfc: fix crash when reading stats while NIC is resetting",
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"x_generator": {
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"engine": "bippy-1.2.0"
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}
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},
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"adp": [
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{
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"metrics": [
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{
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"other": {
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"type": "ssvc",
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"content": {
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"id": "CVE-2023-54156",
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"role": "CISA Coordinator",
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"options": [
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{
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"Exploitation": "none"
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},
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{
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"Automatable": "no"
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},
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{
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"Technical Impact": "total"
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}
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],
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"version": "2.0.3",
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"timestamp": "2026-10-15T21:38:46.222485Z"
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}
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}
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}
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],
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"title": "CISA ADP Vulnrichment",
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"providerMetadata": {
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"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
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"shortName": "CISA-ADP",
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"dateUpdated": "2026-10-15T21:41:40.463Z"
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}
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}
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]
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}
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} |