{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2026-93256", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-09-17T16:02:15.096Z", "datePublished": "2026-09-24T15:51:43.080Z", "dateUpdated": "2026-10-19T09:08:09.709Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-10-19T09:08:09.709Z" }, "descriptions": [ { "lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\narm64: hibernate: mask DAIF before restoring hibernated kernel\n\nThe arm64 hibernate code manages the exception masking in an unsound\nway, leading to potential crashes and/or warnings during resume.\n\nWhen a hibernation image is saved in `swsusp_arch_suspend()`, all DAIF\nexceptions are masked (by virtue of `local_daif_save()`), and the\nsuspended image is saved assuming that all DAIF exceptions will remain\nmasked when the image is restored.\n\nWhen a hibernation image is resumed by `swsusp_arch_resume()`, only\ninterrupts are masked (by virtue of `local_irq_disable()` in\n`resume_target_kernel()`). When pseudo-NMI is enabled the DAIF.IF bits\nwill be clear, and regardless of pseudo-NMI the DAIF.DA bits will be\nclear.\n\nThis means that there are two problems:\n\n(1) It is possible to take Debug, SError, or pseudo-NMI exceptions\n during the resume process. This is unsafe, as during the resume\n process both the old ane new kernels will tranisently be in an\n inconsistent state, and swsusp_arch_suspend_exit() won't retain\n an executable mapping of any exception vectors.\n\n Any exception taken here will be fatal and silent.\n\n(2) When re-entering the resumed kernel, some DAIF bits will be clear\n unexpectedly. This permits Debug, SError, or pseudo-NMI exceptions\n to be taken for a short period while the resumed kernel is not yet\n in a consistent state.\n\n This is detected by CONFIG_ARM64_DEBUG_PRIORITY_MASKING.\n\nAvoid these issues by masking all DAIF exceptions during resume." } ], "affected": [ { "product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "arch/arm64/kernel/hibernate.c" ], "versions": [ { "version": "82869ac57b5d3b550446932c918dbf2caf020c9e", "lessThan": "c9c671e9ab87b639720db8f7f8648bdf0f3bc8ec", "status": "affected", "versionType": "git" }, { "version": "82869ac57b5d3b550446932c918dbf2caf020c9e", "lessThan": "099ad3edcef1d955d9f5d6aab16ae78ecdfd4cda", "status": "affected", "versionType": "git" }, { "version": "82869ac57b5d3b550446932c918dbf2caf020c9e", "lessThan": "716c41bd476334afb943308be9ff2142e34461b7", "status": "affected", "versionType": "git" }, { "version": "82869ac57b5d3b550446932c918dbf2caf020c9e", "lessThan": "5370853041a3cb53a125b77528586278f64b378b", "status": "affected", "versionType": "git" }, { "version": "82869ac57b5d3b550446932c918dbf2caf020c9e", "lessThan": "290c5b0c9fc0c61fb1c41421ed2394f955206ea0", "status": "affected", "versionType": "git" }, { "version": "82869ac57b5d3b550446932c918dbf2caf020c9e", "lessThan": "012823494e20c3cce622982ebd3fd6971be39ad2", "status": "affected", "versionType": "git" }, { "version": "82869ac57b5d3b550446932c918dbf2caf020c9e", "lessThan": "d736ace2c491623c9ab5e73744085e93e9ae3ebe", "status": "affected", "versionType": "git" }, { "version": "82869ac57b5d3b550446932c918dbf2caf020c9e", "lessThan": "684bde100117931f4c51c644a95f42f2dab041bc", "status": "affected", "versionType": "git" } ] }, { "product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "arch/arm64/kernel/hibernate.c" ], "versions": [ { "version": "4.7", "status": "affected" }, { "version": "0", "lessThan": "4.7", "status": "unaffected", "versionType": "semver" }, { "version": "5.10.270", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.15.221", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.1.188", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.6.157", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.12.110", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.18.52", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver" }, { "version": "7.2.6", "lessThanOrEqual": "7.2.*", "status": "unaffected", "versionType": "semver" }, { "version": "7.3", "lessThanOrEqual": "*", "status": "unaffected", "versionType": "original_commit_for_fix" } ] } ], "cpeApplicability": [ { "nodes": [ { "operator": "OR", "negate": false, "cpeMatch": [ { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.7", "versionEndExcluding": "5.10.270" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.7", "versionEndExcluding": "5.15.221" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.7", "versionEndExcluding": "6.1.188" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.7", "versionEndExcluding": "6.6.157" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.7", "versionEndExcluding": "6.12.110" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.7", "versionEndExcluding": "6.18.52" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.7", "versionEndExcluding": "7.2.6" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.7", "versionEndExcluding": "7.3" } ] } ] } ], "references": [ { "url": "https://git.kernel.org/stable/c/c9c671e9ab87b639720db8f7f8648bdf0f3bc8ec" }, { "url": "https://git.kernel.org/stable/c/099ad3edcef1d955d9f5d6aab16ae78ecdfd4cda" }, { "url": "https://git.kernel.org/stable/c/716c41bd476334afb943308be9ff2142e34461b7" }, { "url": "https://git.kernel.org/stable/c/5370853041a3cb53a125b77528586278f64b378b" }, { "url": "https://git.kernel.org/stable/c/290c5b0c9fc0c61fb1c41421ed2394f955206ea0" }, { "url": "https://git.kernel.org/stable/c/012823494e20c3cce622982ebd3fd6971be39ad2" }, { "url": "https://git.kernel.org/stable/c/d736ace2c491623c9ab5e73744085e93e9ae3ebe" }, { "url": "https://git.kernel.org/stable/c/684bde100117931f4c51c644a95f42f2dab041bc" } ], "title": "arm64: hibernate: mask DAIF before restoring hibernated kernel", "x_generator": { "engine": "bippy-1.2.0" } } } }