{"id":"CVE-2024-26816","state":"PUBLISHED","title":"x86, relocs: Ignore relocations in .notes section","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nx86, relocs: Ignore relocations in .notes section\n\nWhen building with CONFIG_XEN_PV=y, .text symbols are emitted into\nthe .notes section so that Xen can find the \"startup_xen\" entry point.\nThis information is used prior to booting the kernel, so relocations\nare not useful. In fact, performing relocations against the .notes\nsection means that the KASLR base is exposed since /sys/kernel/notes\nis world-readable.\n\nTo avoid leaking the KASLR base without breaking unprivileged tools that\nare expecting to read /sys/kernel/notes, skip performing relocations in\nthe .notes section. The values readable in .notes are then identical to\nthose found in System.map.","publishedAt":"2024-04-10T13:53:49.492Z","updatedAt":"2026-10-15T00:38:40.831Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"5ead97c84fa7d63a6a7a2f4e9f18f452bd109045","status":"affected","lessThan":"13edb509abc91c72152a11baaf0e7c060a312e03","versionType":"git"},{"version":"5ead97c84fa7d63a6a7a2f4e9f18f452bd109045","status":"affected","lessThan":"52018aa146e3cf76569a9b1e6e49a2b7c8d4a088","versionType":"git"},{"version":"5ead97c84fa7d63a6a7a2f4e9f18f452bd109045","status":"affected","lessThan":"a4e7ff1a74274e59a2de9bb57236542aa990d20a","versionType":"git"},{"version":"5ead97c84fa7d63a6a7a2f4e9f18f452bd109045","status":"affected","lessThan":"c7cff9780297d55d97ad068b68b703cfe53ef9af","versionType":"git"},{"version":"5ead97c84fa7d63a6a7a2f4e9f18f452bd109045","status":"affected","lessThan":"47635b112a64b7b208224962471e7e42f110e723","versionType":"git"},{"version":"5ead97c84fa7d63a6a7a2f4e9f18f452bd109045","status":"affected","lessThan":"af2a9f98d884205145fd155304a6955822ccca1c","versionType":"git"},{"version":"5ead97c84fa7d63a6a7a2f4e9f18f452bd109045","status":"affected","lessThan":"ae7079238f6faf1b94accfccf334e98b46a0c0aa","versionType":"git"},{"version":"5ead97c84fa7d63a6a7a2f4e9f18f452bd109045","status":"affected","lessThan":"5cb59db49c9c0fccfd33b2209af4f7ae3c6ddf40","versionType":"git"},{"version":"5ead97c84fa7d63a6a7a2f4e9f18f452bd109045","status":"affected","lessThan":"aaa8736370db1a78f0e8434344a484f9fd20be3b","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["arch/x86/tools/relocs.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"2.6.23","status":"affected"},{"version":"0","status":"unaffected","lessThan":"2.6.23","versionType":"semver"},{"version":"4.19.311","status":"unaffected","lessThanOrEqual":"4.19.*","versionType":"semver"},{"version":"5.4.273","status":"unaffected","lessThanOrEqual":"5.4.*","versionType":"semver"},{"version":"5.10.214","status":"unaffected","lessThanOrEqual":"5.10.*","versionType":"semver"},{"version":"5.15.153","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"6.1.83","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.23","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.7.11","status":"unaffected","lessThanOrEqual":"6.7.*","versionType":"semver"},{"version":"6.8.2","status":"unaffected","lessThanOrEqual":"6.8.*","versionType":"semver"},{"version":"6.9","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["arch/x86/tools/relocs.c"]}],"references":["https://git.kernel.org/stable/c/13edb509abc91c72152a11baaf0e7c060a312e03","https://git.kernel.org/stable/c/52018aa146e3cf76569a9b1e6e49a2b7c8d4a088","https://git.kernel.org/stable/c/a4e7ff1a74274e59a2de9bb57236542aa990d20a","https://git.kernel.org/stable/c/c7cff9780297d55d97ad068b68b703cfe53ef9af","https://git.kernel.org/stable/c/47635b112a64b7b208224962471e7e42f110e723","https://git.kernel.org/stable/c/af2a9f98d884205145fd155304a6955822ccca1c","https://git.kernel.org/stable/c/ae7079238f6faf1b94accfccf334e98b46a0c0aa","https://git.kernel.org/stable/c/5cb59db49c9c0fccfd33b2209af4f7ae3c6ddf40","https://git.kernel.org/stable/c/aaa8736370db1a78f0e8434344a484f9fd20be3b","https://lists.debian.org/debian-lts-announce/2024/06/msg00017.html","https://lists.debian.org/debian-lts-announce/2024/06/msg00020.html","https://cert-portal.siemens.com/productcert/html/ssa-265688.html"],"weaknesses":[],"ingestedAt":"2026-10-29T20:07:10.607Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2024/26xxx/CVE-2024-26816.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2024-26816","state":"PUBLISHED","datePublished":"2024-04-10T13:53:49.492Z","dateUpdated":"2026-10-15T00:38:40.831Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2024-02-19T14:20:24.180Z"},"containers":{"cna":{"title":"x86, relocs: Ignore relocations in .notes section","descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nx86, relocs: Ignore relocations in .notes section\n\nWhen building with CONFIG_XEN_PV=y, .text symbols are emitted into\nthe .notes section so that Xen can find the \"startup_xen\" entry point.\nThis information is used prior to booting the kernel, so relocations\nare not useful. In fact, performing relocations against the .notes\nsection means that the KASLR base is exposed since /sys/kernel/notes\nis world-readable.\n\nTo avoid leaking the KASLR base without breaking unprivileged tools that\nare expecting to read /sys/kernel/notes, skip performing relocations in\nthe .notes section. 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