{"id":"CVE-2024-26705","state":"PUBLISHED","title":"parisc: BTLB: Fix crash when setting up BTLB at CPU bringup","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nparisc: BTLB: Fix crash when setting up BTLB at CPU bringup\n\nWhen using hotplug and bringing up a 32-bit CPU, ask the firmware about the\nBTLB information to set up the static (block) TLB entries.\n\nFor that write access to the static btlb_info struct is needed, but\nsince it is marked __ro_after_init the kernel segfaults with missing\nwrite permissions.\n\nFix the crash by dropping the __ro_after_init annotation.","publishedAt":"2024-04-03T14:55:08.733Z","updatedAt":"2026-05-11T20:02:35.261Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"e5ef93d02d6c9cc3a14e7348481c9e41a528caa1","status":"affected","lessThan":"54944f45470af5965fb9c28cf962ec30f38a8f5b","versionType":"git"},{"version":"e5ef93d02d6c9cc3a14e7348481c9e41a528caa1","status":"affected","lessThan":"aa52be55276614d33f22fbe7da36c40d6432d10b","versionType":"git"},{"version":"e5ef93d02d6c9cc3a14e7348481c9e41a528caa1","status":"affected","lessThan":"913b9d443a0180cf0de3548f1ab3149378998486","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["arch/parisc/kernel/cache.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"6.6","status":"affected"},{"version":"0","status":"unaffected","lessThan":"6.6","versionType":"semver"},{"version":"6.6.18","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.7.6","status":"unaffected","lessThanOrEqual":"6.7.*","versionType":"semver"},{"version":"6.8","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["arch/parisc/kernel/cache.c"]}],"references":["https://git.kernel.org/stable/c/54944f45470af5965fb9c28cf962ec30f38a8f5b","https://git.kernel.org/stable/c/aa52be55276614d33f22fbe7da36c40d6432d10b","https://git.kernel.org/stable/c/913b9d443a0180cf0de3548f1ab3149378998486"],"weaknesses":[],"ingestedAt":"2026-10-29T20:07:10.607Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2024/26xxx/CVE-2024-26705.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2024-26705","state":"PUBLISHED","datePublished":"2024-04-03T14:55:08.733Z","dateUpdated":"2026-05-11T20:02:35.261Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2024-02-19T14:20:24.158Z"},"containers":{"cna":{"title":"parisc: BTLB: Fix crash when setting up BTLB at CPU bringup","descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nparisc: BTLB: Fix crash when setting up BTLB at CPU bringup\n\nWhen using hotplug and bringing up a 32-bit CPU, ask the firmware about the\nBTLB information to set up the static (block) TLB entries.\n\nFor that write access to the static btlb_info struct is needed, but\nsince it is marked __ro_after_init the kernel segfaults with missing\nwrite permissions.\n\nFix the crash by dropping the __ro_after_init annotation."}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"e5ef93d02d6c9cc3a14e7348481c9e41a528caa1","status":"affected","lessThan":"54944f45470af5965fb9c28cf962ec30f38a8f5b","versionType":"git"},{"version":"e5ef93d02d6c9cc3a14e7348481c9e41a528caa1","status":"affected","lessThan":"aa52be55276614d33f22fbe7da36c40d6432d10b","versionType":"git"},{"version":"e5ef93d02d6c9cc3a14e7348481c9e41a528caa1","status":"affected","lessThan":"913b9d443a0180cf0de3548f1ab3149378998486","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["arch/parisc/kernel/cache.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"6.6","status":"affected"},{"version":"0","status":"unaffected","lessThan":"6.6","versionType":"semver"},{"version":"6.6.18","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.7.6","status":"unaffected","lessThanOrEqual":"6.7.*","versionType":"semver"},{"version":"6.8","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["arch/parisc/kernel/cache.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/54944f45470af5965fb9c28cf962ec30f38a8f5b"},{"url":"https://git.kernel.org/stable/c/aa52be55276614d33f22fbe7da36c40d6432d10b"},{"url":"https://git.kernel.org/stable/c/913b9d443a0180cf0de3548f1ab3149378998486"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-05-11T20:02:35.261Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.6","versionEndExcluding":"6.6.18"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.6","versionEndExcluding":"6.7.6"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.6","versionEndExcluding":"6.8"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}},"adp":[{"title":"CISA 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