346 lines
17 KiB
JSON
346 lines
17 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-2026-23444",
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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": "2026-01-13T15:37:46.019Z",
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"datePublished": "2026-04-03T15:15:28.464Z",
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"dateUpdated": "2026-10-19T18:35:43.925Z"
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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": "2026-08-05T12:21:47.685Z"
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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\nwifi: mac80211: always free skb on ieee80211_tx_prepare_skb() failure\n\nieee80211_tx_prepare_skb() has three error paths, but only two of them\nfree the skb. The first error path (ieee80211_tx_prepare() returning\nTX_DROP) does not free it, while invoke_tx_handlers() failure and the\nfragmentation check both do.\n\nAdd kfree_skb() to the first error path so all three are consistent,\nand remove the now-redundant frees in callers (ath9k, mt76,\nmac80211_hwsim) to avoid double-free.\n\nDocument the skb ownership guarantee in the function's kdoc."
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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 mac80211 helper is reached from local nl80211 operations such as setting wireless parameters and triggering hardware scans, not from received WiFi frames. A local attacker can drive affected scan paths through the kernel's generic netlink API.\nAC:L - The failure path can be triggered deterministically on an affected device by choosing scan parameters that produce a directed, oversized probe request with a low fragmentation threshold. No race or condition outside the attacker's control is required once the affected driver/path is available.\nPR:L - The reachable nl80211 commands are guarded by GENL_UNS_ADMIN_PERM/CAP_NET_ADMIN in the relevant network namespace, which is low privilege for CVSS purposes and can be reachable through user namespaces in plausible deployments. It does not require full init-namespace root.\nUI:N - After obtaining the needed local privileges, the attacker can issue the netlink operations directly. No separate victim action is required.\nS:U - The bug corrupts kernel networking memory within the same kernel security authority. It does not cross a VM, hypervisor, or separate security-scope boundary.\nC:H - The vulnerable failure path creates a double-free/use-after-free of an sk_buff, which is kernel heap memory corruption. Such corruption can plausibly be exploited for kernel memory disclosure, so confidentiality impact is high.\nI:H - The double-free/use-after-free can plausibly be turned into kernel heap manipulation and control-flow or data corruption. Under the required overestimate rule, this supports high integrity impact.\nA:H - Even without full exploitation, the double-free/use-after-free can trigger slab corruption, warnings, oopses, or kernel panic. Availability impact is therefore high."
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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/wireless/ath/ath9k/channel.c",
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"drivers/net/wireless/mediatek/mt76/scan.c",
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"drivers/net/wireless/virtual/mac80211_hwsim.c",
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"include/net/mac80211.h",
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"net/mac80211/tx.c"
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],
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"versions": [
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{
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"version": "06be6b149f7e406bcf16098567f5a6c9f042bced",
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"lessThan": "905ef207d5ed99ca64adfe39fba9ac46e434327a",
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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": "06be6b149f7e406bcf16098567f5a6c9f042bced",
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"lessThan": "5ef8ca1c164786da24169af155c1ca1ff1353cf8",
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"status": "affected",
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},
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{
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"lessThan": "9a779d1f480e83720b5384adf165604e7ee226bd",
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"status": "affected",
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},
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{
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"lessThan": "f77b51bcee7be2bb686b5f7a2d4a1921e4bdb9f4",
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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": "06be6b149f7e406bcf16098567f5a6c9f042bced",
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"lessThan": "3b4d27acafaeab478fd24f79ad6e593a892828b9",
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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": "06be6b149f7e406bcf16098567f5a6c9f042bced",
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"lessThan": "06e769dddcbeb3baf2ce346273b53dd61fdbecf4",
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"status": "affected",
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},
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{
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"version": "06be6b149f7e406bcf16098567f5a6c9f042bced",
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"lessThan": "50f1b690b4868923fbd242298def2fb88662f108",
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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": "06be6b149f7e406bcf16098567f5a6c9f042bced",
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"lessThan": "d5ad6ab61cbd89afdb60881f6274f74328af3ee9",
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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/wireless/ath/ath9k/channel.c",
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"drivers/net/wireless/mediatek/mt76/scan.c",
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"drivers/net/wireless/virtual/mac80211_hwsim.c",
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"include/net/mac80211.h",
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"net/mac80211/tx.c"
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],
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"versions": [
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{
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"version": "3.13",
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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": "3.13",
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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": "5.10.258",
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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": "5.15.209",
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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": "6.1.175",
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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": "6.6.136",
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"lessThanOrEqual": "6.6.*",
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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": "6.12.84",
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"lessThanOrEqual": "6.12.*",
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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": "6.18.20",
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"lessThanOrEqual": "6.18.*",
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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": "6.19.10",
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"lessThanOrEqual": "6.19.*",
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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": "7.0",
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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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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "3.13",
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"versionEndExcluding": "5.10.258"
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},
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{
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"url": "https://git.kernel.org/stable/c/5ef8ca1c164786da24169af155c1ca1ff1353cf8"
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},
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{
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"url": "https://git.kernel.org/stable/c/9a779d1f480e83720b5384adf165604e7ee226bd"
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},
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{
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"url": "https://git.kernel.org/stable/c/f77b51bcee7be2bb686b5f7a2d4a1921e4bdb9f4"
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},
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{
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"url": "https://git.kernel.org/stable/c/3b4d27acafaeab478fd24f79ad6e593a892828b9"
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},
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{
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"url": "https://git.kernel.org/stable/c/06e769dddcbeb3baf2ce346273b53dd61fdbecf4"
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},
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{
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"url": "https://git.kernel.org/stable/c/50f1b690b4868923fbd242298def2fb88662f108"
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},
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{
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"url": "https://git.kernel.org/stable/c/d5ad6ab61cbd89afdb60881f6274f74328af3ee9"
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}
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],
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"title": "wifi: mac80211: always free skb on ieee80211_tx_prepare_skb() failure",
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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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"x_adpType": "supplier",
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"providerMetadata": {
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"orgId": "0b142b55-0307-4c5a-b3c9-f314f3fb7c5e",
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"shortName": "siemens-SADP",
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"dateUpdated": "2026-10-15T01:15:05.658Z"
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},
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"affected": [
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{
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"vendor": "Siemens",
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"product": "SIMATIC S7-1500 TM MFP - GNU/Linux subsystem",
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"versions": [
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{
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"status": "affected",
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"version": "0",
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"lessThan": "*",
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"versionType": "custom"
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}
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],
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"defaultStatus": "unknown"
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}
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],
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"references": [
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{
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"url": "https://cert-portal.siemens.com/productcert/html/ssa-784472.html"
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}
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]
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},
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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-2026-23444",
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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": "2026-10-16T15:08:09.371784Z"
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}
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}
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}
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],
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"problemTypes": [
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{
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"descriptions": [
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{
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"lang": "en",
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"type": "CWE",
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"cweId": "CWE-401",
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"description": "CWE-401 Missing Release of Memory after Effective Lifetime"
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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": "2026-10-19T18:35:43.925Z"
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}
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}
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]
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}
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} |