{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2022-49172","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","state":"PUBLISHED","assignerShortName":"Linux","dateReserved":"2025-02-26T01:49:39.279Z","datePublished":"2025-02-26T01:55:28.628Z","dateUpdated":"2025-12-23T13:22:34.896Z"},"containers":{"cna":{"providerMetadata":{"orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux","dateUpdated":"2025-12-23T13:22:34.896Z"},"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nparisc: Fix non-access data TLB cache flush faults\n\nWhen a page is not present, we get non-access data TLB faults from\nthe fdc and fic instructions in flush_user_dcache_range_asm and\nflush_user_icache_range_asm. When these occur, the cache line is\nnot invalidated and potentially we get memory corruption. The\nproblem was hidden by the nullification of the flush instructions.\n\nThese faults also affect performance. With pa8800/pa8900 processors,\nthere will be 32 faults per 4 KB page since the cache line is 128\nbytes.  There will be more faults with earlier processors.\n\nThe problem is fixed by using flush_cache_pages(). It does the flush\nusing a tmp alias mapping.\n\nThe flush_cache_pages() call in flush_cache_range() flushed too\nlarge a range.\n\nV2: Remove unnecessary preempt_disable() and preempt_enable() calls."}],"affected":[{"product":"Linux","vendor":"Linux","defaultStatus":"unaffected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["arch/parisc/kernel/cache.c"],"versions":[{"version":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","lessThan":"b3d6adb3a49d82e4e557c5fc16f50c9ff731da5d","status":"affected","versionType":"git"},{"version":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","lessThan":"ddca4b82027e2a66333dd40fab21a4beff435c7e","status":"affected","versionType":"git"},{"version":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","lessThan":"f839e5f1cef36ce268950c387129b1bfefdaebc9","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/parisc/kernel/cache.c"],"versions":[{"version":"2.6.12","status":"affected"},{"version":"0","lessThan":"2.6.12","status":"unaffected","versionType":"semver"},{"version":"5.16.19","lessThanOrEqual":"5.16.*","status":"unaffected","versionType":"semver"},{"version":"5.17.2","lessThanOrEqual":"5.17.*","status":"unaffected","versionType":"semver"},{"version":"5.18","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":"2.6.12","versionEndExcluding":"5.16.19"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.12","versionEndExcluding":"5.17.2"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.12","versionEndExcluding":"5.18"}]}]}],"references":[{"url":"https://git.kernel.org/stable/c/b3d6adb3a49d82e4e557c5fc16f50c9ff731da5d"},{"url":"https://git.kernel.org/stable/c/ddca4b82027e2a66333dd40fab21a4beff435c7e"},{"url":"https://git.kernel.org/stable/c/f839e5f1cef36ce268950c387129b1bfefdaebc9"}],"title":"parisc: Fix non-access data TLB cache flush faults","x_generator":{"engine":"bippy-1.2.0"}}}}