CVE-2026-98058

{"id": "CVE-2026-98058", "cveTags": [], "metrics": {"cvssMetricV31": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 5.5, "attackVector": "LOCAL", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "NONE"}, "impactScore": 3.6, "exploitabilityScore": 1.8}]}, "affected": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "affectedData": [{"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "79a7f8bdb159d9914b58740f3d31d602a6e4aca8", "lessThan": "9496d857205e60241034b798d7745ff8830ba599", "versionType": "git"}, {"status": "affected", "version": "79a7f8bdb159d9914b58740f3d31d602a6e4aca8", "lessThan": "d8cfe9f71d302970ae393616960f2b3021d2b3b0", "versionType": "git"}, {"status": "affected", "version": "79a7f8bdb159d9914b58740f3d31d602a6e4aca8", "lessThan": "65f636322ac402add6046c68e9ece77b9ffd71c9", "versionType": "git"}, {"status": "affected", "version": "79a7f8bdb159d9914b58740f3d31d602a6e4aca8", "lessThan": "3408e98f06ce06ea6a58ca6c39da9c23f0029c06", "versionType": "git"}, {"status": "affected", "version": "79a7f8bdb159d9914b58740f3d31d602a6e4aca8", "lessThan": "d05524794240b52fdc3b6c1220dd05505715824d", "versionType": "git"}], "programFiles": ["kernel/bpf/syscall.c"], "defaultStatus": "unaffected"}, {"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "5.14"}, {"status": "unaffected", "version": "0", "lessThan": "5.14", "versionType": "semver"}, {"status": "unaffected", "version": "6.6.160", "versionType": "semver", "lessThanOrEqual": "6.6.*"}, {"status": "unaffected", "version": "6.12.114", "versionType": "semver", "lessThanOrEqual": "6.12.*"}, {"status": "unaffected", "version": "6.18.57", "versionType": "semver", "lessThanOrEqual": "6.18.*"}, {"status": "unaffected", "version": "7.2.7", "versionType": "semver", "lessThanOrEqual": "7.2.*"}, {"status": "unaffected", "version": "7.3", "versionType": "original_commit_for_fix", "lessThanOrEqual": "*"}], "programFiles": ["kernel/bpf/syscall.c"], "defaultStatus": "affected"}]}], "published": "2026-09-25T11:17:34.767", "references": [{"url": "https://git.kernel.org/stable/c/3408e98f06ce06ea6a58ca6c39da9c23f0029c06", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/65f636322ac402add6046c68e9ece77b9ffd71c9", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/9496d857205e60241034b798d7745ff8830ba599", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/d05524794240b52fdc3b6c1220dd05505715824d", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/d8cfe9f71d302970ae393616960f2b3021d2b3b0", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Primary", "source": "nvd@nist.gov", "description": [{"lang": "en", "value": "CWE-362"}]}], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nbpf: Mark syscall helpers as sleepable\n\nbpf_sys_bpf() executes the bpf(2) syscall body, which can take mutexes,\nallocate with GFP_KERNEL, and wait for an RCU grace period.\nbpf_sys_close() reaches close_fd() and filp_close(), which can sleep as\nwell.\n\nBoth helpers are limited to BPF_PROG_TYPE_SYSCALL, whose main program is\nsleepable. That does not make every callback sleepable: a syscall program\ncan register a bpf_timer callback, and the verifier checks that callback\nin a non-sleepable context while retaining the syscall helper set.\n\nWithout .might_sleep on the prototypes, such a callback can invoke\nbpf_sys_bpf() from hrtimer softirq context and trigger a\nscheduling-while-atomic failure. bpf_sys_close() is exposed through the\nsame missing context check.\n\nSet .might_sleep on both prototypes so the existing helper-context check\nrejects them from timer callbacks and other atomic regions. Calls from the\nsleepable main body remain valid."}], "lastModified": "2026-11-03T17:52:15.880", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "627FDC32-D680-45FA-9AE9-EC17B559BD0B", "versionEndExcluding": "6.6.160", "versionStartIncluding": "5.14"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "E6209C78-7745-495E-92DC-3CD950D149EE", "versionEndExcluding": "6.12.114", "versionStartIncluding": "6.7"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "C630600E-44E2-4A75-9937-F6EEF31F171F", "versionEndExcluding": "6.18.57", "versionStartIncluding": "6.13"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "19917B2D-B4B2-4416-A482-9C7C4929A921", "versionEndExcluding": "7.2.7", "versionStartIncluding": "6.19"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:7.3:rc1:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "11E35E1B-5DB4-4AB9-9706-CD73B799EADF"}], "operator": "OR"}]}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}