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vuln-cve/data/2026/93xxx/CVE-2026-93256.json
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{
"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"
}
}
}
}