{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-46303","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","state":"PUBLISHED","assignerShortName":"Linux","dateReserved":"2026-05-13T15:03:33.111Z","datePublished":"2026-06-08T15:46:30.642Z","dateUpdated":"2026-06-14T18:07:47.782Z"},"containers":{"cna":{"providerMetadata":{"orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux","dateUpdated":"2026-06-14T18:07:47.782Z"},"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nisofs: validate Rock Ridge CE continuation extent against volume size\n\nrock_continue() reads rs->cont_extent verbatim from the Rock Ridge CE\nrecord and passes it to sb_bread() without checking that the block\nnumber is within the mounted ISO 9660 volume.  commit e595447e177b\n(\"[PATCH] rock.c: handle corrupted directories\") added cont_offset\nand cont_size rejection for the CE continuation but did not validate\nthe extent block number itself.  commit f54e18f1b831 (\"isofs: Fix\ninfinite looping over CE entries\") later capped the CE chain length\nat RR_MAX_CE_ENTRIES = 32 but again left the block number unchecked.\n\nWith a crafted ISO mounted via udisks2 (desktop optical auto-mount)\nor via CAP_SYS_ADMIN mount, rs->cont_extent can therefore point at\nan out-of-range block or at blocks belonging to an adjacent\nfilesystem on the same block device.  sb_bread() on an out-of-range\nblock returns NULL cleanly via the block layer EIO path, so there\nis no memory-safety violation.  For in-range reads of adjacent-\nfilesystem data, the CE buffer is parsed as Rock Ridge records and\nonly the text of SL sub-records reaches userspace through\nreadlink(), which makes the info-leak channel narrow and difficult\nto exploit; still, rejecting the malformed CE outright matches the\nrejection shape already present in the same function for\ncont_offset and cont_size.\n\nAdd an ISOFS_SB(sb)->s_nzones bounds check to rock_continue() next\nto the existing offset/size rejection, printing the same\ncorrupted-directory-entry notice."}],"metrics":[{"cvssV3_1":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N","baseScore":8.2,"baseSeverity":"HIGH"}}],"affected":[{"product":"Linux","vendor":"Linux","defaultStatus":"unaffected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["fs/isofs/rock.c"],"versions":[{"version":"f54e18f1b831c92f6512d2eedb224cd63d607d3d","lessThan":"8356fb821016797f5677cbeee5ddc0d32a95b4be","status":"affected","versionType":"git"},{"version":"f54e18f1b831c92f6512d2eedb224cd63d607d3d","lessThan":"d582e12378bc1637f337622feef762f53c43fd57","status":"affected","versionType":"git"},{"version":"f54e18f1b831c92f6512d2eedb224cd63d607d3d","lessThan":"bf1bc673c587f5ef7e9c09b94aea7c5a7847d4d9","status":"affected","versionType":"git"},{"version":"f54e18f1b831c92f6512d2eedb224cd63d607d3d","lessThan":"c9b37c8b73f6368e4750e5ccb0632c380b43c6e5","status":"affected","versionType":"git"},{"version":"f54e18f1b831c92f6512d2eedb224cd63d607d3d","lessThan":"22b36fa081f38ab397c7697f9d539211b51a0cfc","status":"affected","versionType":"git"},{"version":"f54e18f1b831c92f6512d2eedb224cd63d607d3d","lessThan":"e69da8eeab74b4f4505024c38a17bce060fe7df8","status":"affected","versionType":"git"},{"version":"f54e18f1b831c92f6512d2eedb224cd63d607d3d","lessThan":"ef048470c90bc8c1b8318bb2ce329da9ef64b9fe","status":"affected","versionType":"git"},{"version":"f54e18f1b831c92f6512d2eedb224cd63d607d3d","lessThan":"a36d990f591320e9dd379ab30063ebfe91d47e1f","status":"affected","versionType":"git"},{"version":"08313e26e06d4aa9ce1cbba1a8e359e9cab9ad56","status":"affected","versionType":"git"},{"version":"212c4d33ca83e2144064fe9c2911607fbed5386f","status":"affected","versionType":"git"},{"version":"96e44adce250199ec9b2b928be66365779ff1b59","status":"affected","versionType":"git"},{"version":"1fe5620fcd6c2f0a4a927ee10c8e53196da392f3","status":"affected","versionType":"git"},{"version":"fbce0d7dc8965c9fb8d411862040239d4a768c71","status":"affected","versionType":"git"},{"version":"8190393a88f2b0321263a54f2a9eb5a2aa43be7e","status":"affected","versionType":"git"},{"version":"486aa789eadcf44ed87f972b209299c516454693","status":"affected","versionType":"git"},{"version":"b6d20edb6e7cedb4eedb9e0193d20dd488ebae84","status":"affected","versionType":"git"},{"version":"2.6.32.66","lessThan":"2.6.33","status":"affected","versionType":"semver"},{"version":"3.2.67","lessThan":"3.3","status":"affected","versionType":"semver"},{"version":"3.4.107","lessThan":"3.5","status":"affected","versionType":"semver"},{"version":"3.10.64","lessThan":"3.11","status":"affected","versionType":"semver"},{"version":"3.12.36","lessThan":"3.13","status":"affected","versionType":"semver"},{"version":"3.14.28","lessThan":"3.15","status":"affected","versionType":"semver"},{"version":"3.17.8","lessThan":"3.18","status":"affected","versionType":"semver"},{"version":"3.18.2","lessThan":"3.19","status":"affected","versionType":"semver"}]},{"product":"Linux","vendor":"Linux","defaultStatus":"affected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["fs/isofs/rock.c"],"versions":[{"version":"3.19","status":"affected"},{"version":"0","lessThan":"3.19","status":"unaffected","versionType":"semver"},{"version":"5.10.258","lessThanOrEqual":"5.10.*","status":"unaffected","versionType":"semver"},{"version":"5.15.209","lessThanOrEqual":"5.15.*","status":"unaffected","versionType":"semver"},{"version":"6.1.175","lessThanOrEqual":"6.1.*","status":"unaffected","versionType":"semver"},{"version":"6.6.140","lessThanOrEqual":"6.6.*","status":"unaffected","versionType":"semver"},{"version":"6.12.88","lessThanOrEqual":"6.12.*","status":"unaffected","versionType":"semver"},{"version":"6.18.30","lessThanOrEqual":"6.18.*","status":"unaffected","versionType":"semver"},{"version":"7.0.7","lessThanOrEqual":"7.0.*","status":"unaffected","versionType":"semver"},{"version":"7.1","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":"3.19","versionEndExcluding":"5.10.258"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.19","versionEndExcluding":"5.15.209"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.19","versionEndExcluding":"6.1.175"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.19","versionEndExcluding":"6.6.140"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.19","versionEndExcluding":"6.12.88"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.19","versionEndExcluding":"6.18.30"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.19","versionEndExcluding":"7.0.7"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.19","versionEndExcluding":"7.1"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.32.66"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.2.67"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.4.107"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.10.64"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.12.36"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.14.28"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.17.8"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.18.2"}]}]}],"references":[{"url":"https://git.kernel.org/stable/c/8356fb821016797f5677cbeee5ddc0d32a95b4be"},{"url":"https://git.kernel.org/stable/c/d582e12378bc1637f337622feef762f53c43fd57"},{"url":"https://git.kernel.org/stable/c/bf1bc673c587f5ef7e9c09b94aea7c5a7847d4d9"},{"url":"https://git.kernel.org/stable/c/c9b37c8b73f6368e4750e5ccb0632c380b43c6e5"},{"url":"https://git.kernel.org/stable/c/22b36fa081f38ab397c7697f9d539211b51a0cfc"},{"url":"https://git.kernel.org/stable/c/e69da8eeab74b4f4505024c38a17bce060fe7df8"},{"url":"https://git.kernel.org/stable/c/ef048470c90bc8c1b8318bb2ce329da9ef64b9fe"},{"url":"https://git.kernel.org/stable/c/a36d990f591320e9dd379ab30063ebfe91d47e1f"}],"title":"isofs: validate Rock Ridge CE continuation extent against volume size","x_generator":{"engine":"bippy-1.2.0"}}}}