267 lines
12 KiB
JSON
267 lines
12 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-2026-98085",
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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": "2026-09-25T10:19:56.075Z",
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"datePublished": "2026-09-25T10:24:20.485Z",
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"dateUpdated": "2026-10-21T12:54:27.055Z"
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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": "2026-10-21T12:54:27.055Z"
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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: backtrack_insn(): Handle ld_{abs,ind} subprog exit edge\n\nNicholas Carlini reported a bug in precision backtracking mechanism\nfor BPF_LD | BPF_{IND,ABS} instructions. These instructions are\nmodelled as two branches:\n- fallthrough;\n- implicit exit from current subprogram.\n\nThe implicit exit case was not handled by the backtrack_insn()\nfunction. When backtracking such a path backtrack_insn() did not\ncall bt_subprog_enter(), which meant that backtracking continued\nmanipulating precision marks in a caller frame, while looking at\ninstructions in a callee frame.\n\nThis lead to segmentation faults during verification (see the\nselftest), or unsound state pruning."
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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/backtrack.c"
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],
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"versions": [
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{
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"version": "37ad2bb11e9de92cb7b94548705eeedd87f7d392",
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"lessThan": "19cca7c36055906b3cff3e297618ee8a50cde25d",
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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": "8674e2db06cff6b50f2216eed9a761d15425bb34",
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"lessThan": "12c064bcfa56e3631be9f5336ee113b7f849959a",
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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": "ce01a4e5cfac7adbe0be565f90cd32ecbb2f8337",
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"lessThan": "a0cd9e22f8faed30a8da8be357c51bd8b3074ee9",
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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": "ee861486e377edc55361c08dcbceab3f6b6577bd",
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"lessThan": "671b7b9a660ef15b25faa3df161205b9dc8d1eb2",
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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": "ee861486e377edc55361c08dcbceab3f6b6577bd",
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"lessThan": "387b1baefbb776e3f48dc2261e77a49213f470f7",
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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": "928d354ae3557e8f755a227e67be88034eb3cd7f",
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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": "8a800497d9f6c2ec9c2c1ba7b71d0ac2ea7f7bbe",
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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": "de1055e7f9e67af32b1f3376066272b04e5223c0",
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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": "d846d83bdacbd8f14fc45c63b8c1d22608452e1c",
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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": "6.6.148",
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"lessThan": "6.6.160",
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"status": "affected",
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"versionType": "semver"
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},
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{
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"version": "6.12.101",
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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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"version": "6.18.42",
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"lessThan": "6.18.57",
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"status": "affected",
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"versionType": "semver"
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},
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{
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"version": "5.10.265",
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"lessThan": "5.11",
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"status": "affected",
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"versionType": "semver"
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},
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{
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"version": "5.15.216",
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"lessThan": "5.16",
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"status": "affected",
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"versionType": "semver"
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},
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{
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"version": "6.1.183",
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"lessThan": "6.2",
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"status": "affected",
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"versionType": "semver"
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},
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{
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"version": "7.0.10",
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"lessThan": "7.1",
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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/backtrack.c"
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],
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"versions": [
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{
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"version": "7.1",
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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": "7.1",
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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": "6.6.160",
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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": "6.12.114",
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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": "6.18.57",
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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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"versionStartIncluding": "6.6.148",
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"versionEndExcluding": "6.6.160"
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "6.18.42",
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"versionEndExcluding": "6.18.57"
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "7.1",
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"versionEndExcluding": "7.2.7"
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"versionEndExcluding": "7.3"
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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/19cca7c36055906b3cff3e297618ee8a50cde25d"
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},
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{
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"url": "https://git.kernel.org/stable/c/12c064bcfa56e3631be9f5336ee113b7f849959a"
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},
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{
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"url": "https://git.kernel.org/stable/c/a0cd9e22f8faed30a8da8be357c51bd8b3074ee9"
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},
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{
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"url": "https://git.kernel.org/stable/c/671b7b9a660ef15b25faa3df161205b9dc8d1eb2"
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},
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{
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"url": "https://git.kernel.org/stable/c/387b1baefbb776e3f48dc2261e77a49213f470f7"
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}
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],
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"title": "bpf: backtrack_insn(): Handle ld_{abs,ind} subprog exit edge",
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