248 lines
12 KiB
JSON
248 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-2026-90303",
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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": "2026-09-11T19:38:34.799Z",
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"datePublished": "2026-09-17T16:08:26.455Z",
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"dateUpdated": "2026-10-19T09:01:21.209Z"
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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": "2026-10-19T09:01:21.209Z"
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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\nARM: 9485/1: mm: acquire mmap write lock around show_pte() for user faults\n\nWhen CONFIG_DEBUG_USER=y, and cmdline \"user_debug=31\" is set,\na user fault may trigger show_pte() without any lock.\nIf another thread in the same process concurrently calls munmap(),\nthe page table pages may be freed while show_pte() is still traversing\nthem, causing a use-after-free in show_pte().\n\nIf CONFIG_ARM_LPAE=y, this may cause a kernel panic if the pages table\nof PMD are freed when show_pte() is running.\n\nAcquire mmap_write_lock() around show_pte() for user faults to fix the\ncontention.\n\nFor user faults, additionally restrict that show_pte() is called only\nwhen the addr is a user-space address (addr < TASK_SIZE). This is because\nthe lock of tsk->mm only protects the virtual memory of user address space,\nfurthermore, dumping the page tables of a kernel-space address for user\nfaults is unnecessary and may have security implications.\n\nKeep everything unchanged for kernel faults, because the kernel is\nalready in the \"oops\" state, acquiring a lock may risk a deadlock."
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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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"arch/arm/mm/fault.c"
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],
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"versions": [
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{
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"version": "6d021b724481fbb908eb29384898deb9f00dfe70",
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"lessThan": "ab14f07952adfe735d86a53518f8cd576dfd5892",
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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": "6d021b724481fbb908eb29384898deb9f00dfe70",
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"lessThan": "07e4d5380f2a844ab7a1b440dde350caf561cbb0",
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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": "6d021b724481fbb908eb29384898deb9f00dfe70",
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"lessThan": "2a14d7797a49a47bccd1a9327fd69da838dcb0dd",
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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": "6d021b724481fbb908eb29384898deb9f00dfe70",
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"lessThan": "63e3c958a602d0896a101a897c2361878c266ca7",
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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": "6d021b724481fbb908eb29384898deb9f00dfe70",
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"lessThan": "59bbf86d0ff9373bfa033ca123c1e924f09f1eba",
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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": "6d021b724481fbb908eb29384898deb9f00dfe70",
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"lessThan": "c71f9a56520b419e55d173052629f2324deb5549",
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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": "6d021b724481fbb908eb29384898deb9f00dfe70",
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"lessThan": "720408d98d9fb3c91a12090436734c8c61f04545",
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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": "6d021b724481fbb908eb29384898deb9f00dfe70",
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"lessThan": "1039bffd6ae9c75b42b7d148d6c1106134107b66",
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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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"arch/arm/mm/fault.c"
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],
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"versions": [
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{
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"version": "4.0",
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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": "4.0",
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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": "5.10.270",
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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": "5.15.221",
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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": "6.1.188",
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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": "6.6.157",
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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": "6.12.110",
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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": "6.18.52",
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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": "7.2.6",
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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": "4.0",
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"versionEndExcluding": "5.10.270"
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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": "4.0",
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"versionEndExcluding": "5.15.221"
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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": "4.0",
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"versionEndExcluding": "6.1.188"
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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": "4.0",
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"versionEndExcluding": "6.6.157"
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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": "4.0",
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"versionEndExcluding": "6.12.110"
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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": "4.0",
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"versionEndExcluding": "6.18.52"
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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": "4.0",
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"versionEndExcluding": "7.2.6"
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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": "4.0",
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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/ab14f07952adfe735d86a53518f8cd576dfd5892"
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},
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{
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"url": "https://git.kernel.org/stable/c/07e4d5380f2a844ab7a1b440dde350caf561cbb0"
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},
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{
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"url": "https://git.kernel.org/stable/c/2a14d7797a49a47bccd1a9327fd69da838dcb0dd"
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},
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{
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"url": "https://git.kernel.org/stable/c/63e3c958a602d0896a101a897c2361878c266ca7"
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},
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{
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"url": "https://git.kernel.org/stable/c/59bbf86d0ff9373bfa033ca123c1e924f09f1eba"
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},
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{
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"url": "https://git.kernel.org/stable/c/c71f9a56520b419e55d173052629f2324deb5549"
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},
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{
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"url": "https://git.kernel.org/stable/c/720408d98d9fb3c91a12090436734c8c61f04545"
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},
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{
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"url": "https://git.kernel.org/stable/c/1039bffd6ae9c75b42b7d148d6c1106134107b66"
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}
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],
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"title": "ARM: 9485/1: mm: acquire mmap write lock around show_pte() for user faults",
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"x_generator": {
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"engine": "bippy-1.2.0"
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}
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} |