164 lines
8.4 KiB
JSON
164 lines
8.4 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-2022-49081",
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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": "2025-02-26T01:49:39.247Z",
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"datePublished": "2025-02-26T01:54:41.639Z",
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"dateUpdated": "2026-05-11T18:52:39.819Z"
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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": "2026-05-11T18:52:39.819Z"
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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\nhighmem: fix checks in __kmap_local_sched_{in,out}\n\nWhen CONFIG_DEBUG_KMAP_LOCAL is enabled __kmap_local_sched_{in,out} check\nthat even slots in the tsk->kmap_ctrl.pteval are unmapped. The slots are\ninitialized with 0 value, but the check is done with pte_none. 0 pte\nhowever does not necessarily mean that pte_none will return true. e.g.\non xtensa it returns false, resulting in the following runtime warnings:\n\n WARNING: CPU: 0 PID: 101 at mm/highmem.c:627 __kmap_local_sched_out+0x51/0x108\n CPU: 0 PID: 101 Comm: touch Not tainted 5.17.0-rc7-00010-gd3a1cdde80d2-dirty #13\n Call Trace:\n dump_stack+0xc/0x40\n __warn+0x8f/0x174\n warn_slowpath_fmt+0x48/0xac\n __kmap_local_sched_out+0x51/0x108\n __schedule+0x71a/0x9c4\n preempt_schedule_irq+0xa0/0xe0\n common_exception_return+0x5c/0x93\n do_wp_page+0x30e/0x330\n handle_mm_fault+0xa70/0xc3c\n do_page_fault+0x1d8/0x3c4\n common_exception+0x7f/0x7f\n\n WARNING: CPU: 0 PID: 101 at mm/highmem.c:664 __kmap_local_sched_in+0x50/0xe0\n CPU: 0 PID: 101 Comm: touch Tainted: G W 5.17.0-rc7-00010-gd3a1cdde80d2-dirty #13\n Call Trace:\n dump_stack+0xc/0x40\n __warn+0x8f/0x174\n warn_slowpath_fmt+0x48/0xac\n __kmap_local_sched_in+0x50/0xe0\n finish_task_switch$isra$0+0x1ce/0x2f8\n __schedule+0x86e/0x9c4\n preempt_schedule_irq+0xa0/0xe0\n common_exception_return+0x5c/0x93\n do_wp_page+0x30e/0x330\n handle_mm_fault+0xa70/0xc3c\n do_page_fault+0x1d8/0x3c4\n common_exception+0x7f/0x7f\n\nFix it by replacing !pte_none(pteval) with pte_val(pteval) != 0."
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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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"mm/highmem.c"
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],
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"versions": [
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{
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"version": "5fbda3ecd14a5343644979c98d6eb65b7e7de9d8",
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"lessThan": "c21d040de6225414547d9bd31cd200f290991c85",
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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": "5fbda3ecd14a5343644979c98d6eb65b7e7de9d8",
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"lessThan": "85550b0f5fa5dd3c30469ea702c44444ef242c83",
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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": "5fbda3ecd14a5343644979c98d6eb65b7e7de9d8",
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"lessThan": "7dd5b3b97716a611fcf67d92fd2370fcb8d50372",
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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": "5fbda3ecd14a5343644979c98d6eb65b7e7de9d8",
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"lessThan": "66f133ceab7456c789f70a242991ed1b27ba1c3d",
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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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"mm/highmem.c"
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],
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"versions": [
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{
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"version": "5.11",
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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": "5.11",
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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": "5.15.34",
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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": "5.16.20",
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"lessThanOrEqual": "5.16.*",
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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": "5.17.3",
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"lessThanOrEqual": "5.17.*",
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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": "5.18",
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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": "5.11",
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"versionEndExcluding": "5.15.34"
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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": "5.11",
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"versionEndExcluding": "5.16.20"
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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": "5.11",
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"versionEndExcluding": "5.17.3"
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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": "5.11",
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"versionEndExcluding": "5.18"
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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/c21d040de6225414547d9bd31cd200f290991c85"
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},
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{
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"url": "https://git.kernel.org/stable/c/85550b0f5fa5dd3c30469ea702c44444ef242c83"
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},
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{
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"url": "https://git.kernel.org/stable/c/7dd5b3b97716a611fcf67d92fd2370fcb8d50372"
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},
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{
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"url": "https://git.kernel.org/stable/c/66f133ceab7456c789f70a242991ed1b27ba1c3d"
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}
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],
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"title": "highmem: fix checks in __kmap_local_sched_{in,out}",
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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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} |