{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2023-54232","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","state":"PUBLISHED","assignerShortName":"Linux","dateReserved":"2025-12-30T12:06:44.502Z","datePublished":"2025-12-30T12:11:23.565Z","dateUpdated":"2026-05-11T19:58:00.368Z"},"containers":{"cna":{"providerMetadata":{"orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux","dateUpdated":"2026-05-11T19:58:00.368Z"},"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nm68k: Only force 030 bus error if PC not in exception table\n\n__get_kernel_nofault() does copy data in supervisor mode when\nforcing a task backtrace log through /proc/sysrq_trigger.\nThis is expected cause a bus error exception on e.g. NULL\npointer dereferencing when logging a kernel task has no\nworkqueue associated. This bus error ought to be ignored.\n\nOur 030 bus error handler is ill equipped to deal with this:\n\nWhenever ssw indicates a kernel mode access on a data fault,\nwe don't even attempt to handle the fault and instead always\nsend a SEGV signal (or panic). As a result, the check\nfor exception handling at the fault PC (buried in\nsend_sig_fault() which gets called from do_page_fault()\neventually) is never used.\n\nIn contrast, both 040 and 060 access error handlers do not\ncare whether a fault happened on supervisor mode access,\nand will call do_page_fault() on those, ultimately honoring\nthe exception table.\n\nAdd a check in bus_error030 to call do_page_fault() in case\nwe do have an entry for the fault PC in our exception table.\n\nI had attempted a fix for this earlier in 2019 that did rely\non testing pagefault_disabled() (see link below) to achieve\nthe same thing, but this patch should be more generic.\n\nTested on 030 Atari Falcon."}],"affected":[{"product":"Linux","vendor":"Linux","defaultStatus":"unaffected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["arch/m68k/kernel/traps.c"],"versions":[{"version":"f2325ecebc5b7988fd49968bd3a660fd1594dc84","lessThan":"1a6059f5ed57f48edfe7159404ff7d538d9d405b","status":"affected","versionType":"git"},{"version":"f2325ecebc5b7988fd49968bd3a660fd1594dc84","lessThan":"f55cb52ec98b22125f5bda36391edb8894f7e8cf","status":"affected","versionType":"git"},{"version":"f2325ecebc5b7988fd49968bd3a660fd1594dc84","lessThan":"2100e374251a8fc00cce1916cfc50f3cb652cbe3","status":"affected","versionType":"git"},{"version":"f2325ecebc5b7988fd49968bd3a660fd1594dc84","lessThan":"df1da53a7e98f0b2a0eb2241c154f148f2f2c1d8","status":"affected","versionType":"git"},{"version":"f2325ecebc5b7988fd49968bd3a660fd1594dc84","lessThan":"8bf8d5dade4c5e1d8a2386f29253ed28b5d87735","status":"affected","versionType":"git"},{"version":"f2325ecebc5b7988fd49968bd3a660fd1594dc84","lessThan":"54fa25ffab2b700df5abd58c136d64a912c53953","status":"affected","versionType":"git"},{"version":"f2325ecebc5b7988fd49968bd3a660fd1594dc84","lessThan":"ec15405b80fc15ffc87a23d01378ae061c1aba07","status":"affected","versionType":"git"},{"version":"f2325ecebc5b7988fd49968bd3a660fd1594dc84","lessThan":"e36a82bebbf7da814530d5a179bef9df5934b717","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/m68k/kernel/traps.c"],"versions":[{"version":"2.6.18","status":"affected"},{"version":"0","lessThan":"2.6.18","status":"unaffected","versionType":"semver"},{"version":"4.14.312","lessThanOrEqual":"4.14.*","status":"unaffected","versionType":"semver"},{"version":"4.19.280","lessThanOrEqual":"4.19.*","status":"unaffected","versionType":"semver"},{"version":"5.4.240","lessThanOrEqual":"5.4.*","status":"unaffected","versionType":"semver"},{"version":"5.10.177","lessThanOrEqual":"5.10.*","status":"unaffected","versionType":"semver"},{"version":"5.15.105","lessThanOrEqual":"5.15.*","status":"unaffected","versionType":"semver"},{"version":"6.1.22","lessThanOrEqual":"6.1.*","status":"unaffected","versionType":"semver"},{"version":"6.2.9","lessThanOrEqual":"6.2.*","status":"unaffected","versionType":"semver"},{"version":"6.3","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":"2.6.18","versionEndExcluding":"4.14.312"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.18","versionEndExcluding":"4.19.280"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.18","versionEndExcluding":"5.4.240"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.18","versionEndExcluding":"5.10.177"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.18","versionEndExcluding":"5.15.105"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.18","versionEndExcluding":"6.1.22"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.18","versionEndExcluding":"6.2.9"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.18","versionEndExcluding":"6.3"}]}]}],"references":[{"url":"https://git.kernel.org/stable/c/1a6059f5ed57f48edfe7159404ff7d538d9d405b"},{"url":"https://git.kernel.org/stable/c/f55cb52ec98b22125f5bda36391edb8894f7e8cf"},{"url":"https://git.kernel.org/stable/c/2100e374251a8fc00cce1916cfc50f3cb652cbe3"},{"url":"https://git.kernel.org/stable/c/df1da53a7e98f0b2a0eb2241c154f148f2f2c1d8"},{"url":"https://git.kernel.org/stable/c/8bf8d5dade4c5e1d8a2386f29253ed28b5d87735"},{"url":"https://git.kernel.org/stable/c/54fa25ffab2b700df5abd58c136d64a912c53953"},{"url":"https://git.kernel.org/stable/c/ec15405b80fc15ffc87a23d01378ae061c1aba07"},{"url":"https://git.kernel.org/stable/c/e36a82bebbf7da814530d5a179bef9df5934b717"}],"title":"m68k: Only force 030 bus error if PC not in exception table","x_generator":{"engine":"bippy-1.2.0"}}}}