{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2025-40241","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","state":"PUBLISHED","assignerShortName":"Linux","dateReserved":"2025-04-16T07:20:57.181Z","datePublished":"2025-12-04T15:31:30.594Z","dateUpdated":"2026-05-11T21:45:31.323Z"},"containers":{"cna":{"providerMetadata":{"orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux","dateUpdated":"2026-05-11T21:45:31.323Z"},"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nerofs: fix crafted invalid cases for encoded extents\n\nRobert recently reported two corrupted images that can cause system\ncrashes, which are related to the new encoded extents introduced\nin Linux 6.15:\n\n  - The first one [1] has plen != 0 (e.g. plen == 0x2000000) but\n    (plen & Z_EROFS_EXTENT_PLEN_MASK) == 0. It is used to represent\n    special extents such as sparse extents (!EROFS_MAP_MAPPED), but\n    previously only plen == 0 was handled;\n\n  - The second one [2] has pa 0xffffffffffdcffed and plen 0xb4000,\n    then \"cur [0xfffffffffffff000] += bvec.bv_len [0x1000]\" in\n    \"} while ((cur += bvec.bv_len) < end);\" wraps around, causing an\n    out-of-bound access of pcl->compressed_bvecs[] in\n    z_erofs_submit_queue().  EROFS only supports 48-bit physical block\n    addresses (up to 1EiB for 4k blocks), so add a sanity check to\n    enforce this."}],"affected":[{"product":"Linux","vendor":"Linux","defaultStatus":"unaffected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["fs/erofs/zmap.c"],"versions":[{"version":"1d191b4ca51d73699cb127386b95ac152af2b930","lessThan":"00d8fe0b72f4ca0a983abced36aad2160038c421","status":"affected","versionType":"git"},{"version":"1d191b4ca51d73699cb127386b95ac152af2b930","lessThan":"a429b76114aaca3ef1aff4cd469dcf025431bd11","status":"affected","versionType":"git"}]},{"product":"Linux","vendor":"Linux","defaultStatus":"affected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["fs/erofs/zmap.c"],"versions":[{"version":"6.15","status":"affected"},{"version":"0","lessThan":"6.15","status":"unaffected","versionType":"semver"},{"version":"6.17.6","lessThanOrEqual":"6.17.*","status":"unaffected","versionType":"semver"},{"version":"6.18","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":"6.15","versionEndExcluding":"6.17.6"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.15","versionEndExcluding":"6.18"}]}]}],"references":[{"url":"https://git.kernel.org/stable/c/00d8fe0b72f4ca0a983abced36aad2160038c421"},{"url":"https://git.kernel.org/stable/c/a429b76114aaca3ef1aff4cd469dcf025431bd11"}],"title":"erofs: fix crafted invalid cases for encoded extents","x_generator":{"engine":"bippy-1.2.0"}}}}