170 lines
8.0 KiB
JSON
170 lines
8.0 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-2026-98062",
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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": "2026-09-25T10:19:56.073Z",
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"datePublished": "2026-09-25T10:24:06.597Z",
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"dateUpdated": "2026-10-21T12:54:20.506Z"
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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": "2026-10-21T12:54:20.506Z"
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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\nbpf: Mark signal tracepoint siginfo arguments as scalar\n\nThe signal_generate and signal_deliver tracepoints declare their info\nargument as a struct kernel_siginfo pointer. btf_ctx_access() therefore\ntreats it as a trusted pointer for tp_btf programs.\n\nSignal delivery also uses SEND_SIG_NOINFO and SEND_SIG_PRIV as special\nvalues for this argument. Those values are zero and one respectively,\nand are not pointers. A tp_btf program can currently dereference either\nvalue and fault the kernel. In particular, signal_generate can run from\ntimer interrupt context, turning the fault into a kernel panic.\n\nRecord both tracepoints in raw_tp_null_args[] and mark argument one as\na non-pointer. This preserves scalar access to the cookie while rejecting\ndirect and helper-mediated pointer use. Merely marking it nullable would\nnot suffice because SEND_SIG_PRIV is nonzero."
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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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"kernel/bpf/btf.c"
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],
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"versions": [
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{
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"version": "b2fc4b17fc13810ef440fb323fad3981cd174985",
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"lessThan": "05757377fa0447163d07c43a119f81abe1eef8dc",
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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": "838a10bd2ebfe11a60dd67687533a7cfc220cc86",
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"lessThan": "0e78cb242a57e481061fcb542fed4d51afba25c4",
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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": "838a10bd2ebfe11a60dd67687533a7cfc220cc86",
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"lessThan": "d2eaea3599bcce659ce91862254dc91bcbdb6351",
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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": "838a10bd2ebfe11a60dd67687533a7cfc220cc86",
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"lessThan": "77515ab12e4983e6416f8c35039a3f0c0822ac70",
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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": "6.12.6",
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"lessThan": "6.12.114",
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"status": "affected",
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"versionType": "semver"
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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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"kernel/bpf/btf.c"
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],
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"versions": [
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{
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"version": "6.13",
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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": "6.13",
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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": "6.12.114",
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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": "6.18.53",
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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": "7.2.7",
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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": "6.12.6",
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"versionEndExcluding": "6.12.114"
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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": "6.13",
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"versionEndExcluding": "6.18.53"
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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": "6.13",
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"versionEndExcluding": "7.2.7"
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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": "6.13",
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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/05757377fa0447163d07c43a119f81abe1eef8dc"
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},
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{
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"url": "https://git.kernel.org/stable/c/0e78cb242a57e481061fcb542fed4d51afba25c4"
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},
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{
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"url": "https://git.kernel.org/stable/c/d2eaea3599bcce659ce91862254dc91bcbdb6351"
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},
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{
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"url": "https://git.kernel.org/stable/c/77515ab12e4983e6416f8c35039a3f0c0822ac70"
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}
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],
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"title": "bpf: Mark signal tracepoint siginfo arguments as scalar",
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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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} |