264 lines
13 KiB
JSON
264 lines
13 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-2026-97923",
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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": "2026-09-25T10:18:58.202Z",
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"datePublished": "2026-09-25T10:22:42.300Z",
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"dateUpdated": "2026-10-19T09:10:50.106Z"
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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": "2026-10-19T09:10:50.106Z"
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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\ntracing: Free histogram the var ref when its initialization fails\n\ncreate_var_ref() allocates a VAR_REF hist_field and then calls\ninit_var_ref() to fill it in. When that fails the field is leaked.\n\ncommit 656fe2ba85e8 (\"tracing: Use hist trigger's var_ref array to destroy\nvar_refs\") made destroy_hist_field() return early for\nHIST_FIELD_FL_VAR_REF, since var refs are freed by walking the trigger's\nvar_refs[] array instead. create_var_ref() adds the field to that array\nonly after init_var_ref() has succeeded, so on this path the field is in\nneither place and nothing frees it. The call was correct when it was\nwritten, before var refs were taken out of destroy_hist_field().\n\ninit_var_ref() cannot free it either. The caller owns the field, so\ninit_var_ref() undoes only its own string allocations and leaves the\nfield alone. Freeing it there would leave create_var_ref() passing freed\nmemory to destroy_hist_field(), which reads its flags.\n\nCall __destroy_hist_field(), which frees the field without consulting\nthe flag."
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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/trace/trace_events_hist.c"
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],
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"versions": [
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{
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"version": "656fe2ba85e81d00e4447bf77b8da2be3c47acb2",
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"lessThan": "608b7751926ec08fae6a1ac4e7308195da68c362",
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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": "656fe2ba85e81d00e4447bf77b8da2be3c47acb2",
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"lessThan": "4870f9071c9ea3c1423a07741b85a794db30d672",
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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": "656fe2ba85e81d00e4447bf77b8da2be3c47acb2",
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"lessThan": "352f84a381e7b4651b30366e93cb858f3fa9c91a",
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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": "656fe2ba85e81d00e4447bf77b8da2be3c47acb2",
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"lessThan": "4924328d6991f25b65bb7c8ff5d56c2a9b254851",
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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": "656fe2ba85e81d00e4447bf77b8da2be3c47acb2",
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"lessThan": "74375caa20fe5165807b4334c783d1790b01f02a",
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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": "656fe2ba85e81d00e4447bf77b8da2be3c47acb2",
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"lessThan": "222abcbe7866fef04563b6eb89fb21f627dcbc77",
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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": "656fe2ba85e81d00e4447bf77b8da2be3c47acb2",
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"lessThan": "a69baeac38677270656e85753d93856a076dee57",
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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": "656fe2ba85e81d00e4447bf77b8da2be3c47acb2",
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"lessThan": "516001d53e6b2ea95a251ee2ef54a1a689a3fd58",
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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": "836717841a30d7845cdf9cb806ee0ff3bfa7135a",
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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": "4.19.100",
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"lessThan": "4.20",
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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/trace/trace_events_hist.c"
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],
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"versions": [
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{
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"version": "5.0",
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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": "5.0",
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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": "5.10.271",
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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": "5.15.222",
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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": "6.1.189",
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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": "6.6.158",
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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": "6.12.111",
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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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"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": "5.0",
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"versionEndExcluding": "5.10.271"
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},
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionEndExcluding": "6.6.158"
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"versionStartIncluding": "5.0",
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"versionEndExcluding": "6.12.111"
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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/608b7751926ec08fae6a1ac4e7308195da68c362"
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},
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{
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"url": "https://git.kernel.org/stable/c/4870f9071c9ea3c1423a07741b85a794db30d672"
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},
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{
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"url": "https://git.kernel.org/stable/c/352f84a381e7b4651b30366e93cb858f3fa9c91a"
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},
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{
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"url": "https://git.kernel.org/stable/c/4924328d6991f25b65bb7c8ff5d56c2a9b254851"
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},
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{
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"url": "https://git.kernel.org/stable/c/74375caa20fe5165807b4334c783d1790b01f02a"
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},
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{
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"url": "https://git.kernel.org/stable/c/222abcbe7866fef04563b6eb89fb21f627dcbc77"
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},
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{
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"url": "https://git.kernel.org/stable/c/a69baeac38677270656e85753d93856a076dee57"
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},
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{
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"url": "https://git.kernel.org/stable/c/516001d53e6b2ea95a251ee2ef54a1a689a3fd58"
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}
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],
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"title": "tracing: Free histogram the var ref when its initialization fails",
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"x_generator": {
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"engine": "bippy-1.2.0"
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}
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} |