124 lines
6.3 KiB
JSON
124 lines
6.3 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-2026-98810",
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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": "2026-09-25T10:25:14.371Z",
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"datePublished": "2026-10-18T15:48:56.733Z",
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"dateUpdated": "2026-10-19T09:26:03.626Z"
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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": "2026-10-19T09:26:03.626Z"
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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: fix slab-out-of-bounds read in ieee80211_monitor_select_queue()\n\nieee80211_monitor_select_queue() validates the skb length using skb->len\nbefore dereferencing pointers into skb->data to access the 802.11 header.\nHowever, skb->len includes data in both the linear head buffer and\nnon-linear fragments/pages. When AF_PACKET sends a packet large enough to\nbecome non-linear, the 802.11 header at skb->data + len_rthdr may extend\npast the linear head buffer even though skb->len appears sufficient.\n\nThis leads to a slab-out-of-bounds read when accessing hdr->frame_control,\nas the kernel reads beyond the allocated skb head buffer:\n\n BUG: KASAN: slab-out-of-bounds in ieee80211_monitor_select_queue+0x1ed/0x220\n\nsyzbot has hit the same issues.\n\nFix this by checking skb_headlen(skb) (which gives the length of the\nlinear data region) instead of skb->len before dereferencing skb->data\npointers. This ensures the required bytes are actually present in the\nlinear portion of the skb.\n\nApply the same fix to ieee80211_validate_radiotap_len() which has the\nsame class of bug: it uses skb->len to validate accesses to skb->data,\nand to the corresponding checks in ieee80211_monitor_start_xmit(): for\ndrivers advertising NETIF_F_SG the skb is not linearized before\nndo_start_xmit, so the 802.11 header can be read past the linear\nbuffer there as well."
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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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"net/mac80211/iface.c",
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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": "9b8a74e3482f9fc077a88c13fa0ceca8feb0b772",
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"lessThan": "63e7064b4c1c4b540bf2f0cba47384f92ab95307",
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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": "9b8a74e3482f9fc077a88c13fa0ceca8feb0b772",
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"lessThan": "6f63e919fe1e335b8abcb3a28bfd4804a98d875a",
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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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"net/mac80211/iface.c",
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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": "2.6.24",
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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": "2.6.24",
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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": "7.2.10",
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"lessThanOrEqual": "7.2.*",
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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": "7.3",
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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": "2.6.24",
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"versionEndExcluding": "7.2.10"
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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": "2.6.24",
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"versionEndExcluding": "7.3"
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}
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]
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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/63e7064b4c1c4b540bf2f0cba47384f92ab95307"
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},
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{
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"url": "https://git.kernel.org/stable/c/6f63e919fe1e335b8abcb3a28bfd4804a98d875a"
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}
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],
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"title": "wifi: mac80211: fix slab-out-of-bounds read in ieee80211_monitor_select_queue()",
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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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}
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} |