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CVE-2026-63818

In the Linux kernel, the following vulnerability has been resolved: f2fs: validate orphan inode entry count f2fs_recover_orphan_inodes() trusts the orphan block entry_count when replaying orphan inodes from the checkpoint pack. A corrupted entry_count larger than F2FS_ORPHANS_PER_BLOCK makes the recovery loop read past the ino[] array and interpret footer or following data as inode numbers. On a crafted image, mounting an unpatched kernel can drive orphan recovery into f2fs_bug_on() and panic
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:9bba803d640564587105e096340f208df9957791aa217d300a2c68e21b724c62
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
1

Preserved source conflicts

No provider value was silently selected as the winner.

affected · 2 assertions

{"defaultStatus":"unaffected","product":"Linux","programFiles":["fs/f2fs/checkpoint.c","include/linux/f2fs_fs.h"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"210c210c92d78fdf5051bc55c5c69044b1a2150a","status":"affected","version":"127e670abfa7fa150f6550d620ded930f5bdb4e7","versionType":"git"},{"lessThan":"ad101d15716f5a24d1fa82a849f80430c805a3dd","status":"affected","version":"127e670abfa7fa150f6550d620ded930f5bdb4e7","versionType":"git"},{"lessThan":"d18c81f5d0ecd5796aa47d66d98f2dd54d8d0f70","status":"affected","version":…

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:14b14d702d8a75c96bc8d5c97c62cd8aa98fcd0ea89c6fa5ee33282557a8a367 · sha256:61035fa134cf3581… · /containers/cna/affected/0

{"defaultStatus":"affected","product":"Linux","programFiles":["fs/f2fs/checkpoint.c","include/linux/f2fs_fs.h"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"3.8"},{"lessThan":"3.8","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"5.10.*","status":"unaffected","version":"5.10.261","versionType":"semver"},{"lessThanOrEqual":"5.15.*","status":"unaffected","version":"5.15.212","versionType":"semver"},{"lessThanOrEqual":"6.1.*","status":"unaffected","version":"6.1.178","versionTy…

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:14b14d702d8a75c96bc8d5c97c62cd8aa98fcd0ea89c6fa5ee33282557a8a367 · sha256:61035fa134cf3581… · /containers/cna/affected/1

Affected products and versions

2 source assertions
{"defaultStatus":"unaffected","product":"Linux","programFiles":["fs/f2fs/checkpoint.c","include/linux/f2fs_fs.h"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"210c210c92d78fdf5051bc55c5c69044b1a2150a","status":"affected","version":"127e670abfa7fa150f6550d620ded930f5bdb4e7","versionType":"git"},{"lessThan":"ad101d15716f5a24d1fa82a849f80430c805a3dd","status":"affected","version":"127e670abfa7fa150f6550d620ded930f5bdb4e7","versionType":"git"},{"lessThan":"d18c81f5d0ecd5796aa47d66d98f2dd54d8d0f70","status":"affected","version":…
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:14b14d702d8a75c96bc8d5c97c62cd8aa98fcd0ea89c6fa5ee33282557a8a367 · sha256:61035fa134cf3581… · /containers/cna/affected/0
{"defaultStatus":"affected","product":"Linux","programFiles":["fs/f2fs/checkpoint.c","include/linux/f2fs_fs.h"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"3.8"},{"lessThan":"3.8","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"5.10.*","status":"unaffected","version":"5.10.261","versionType":"semver"},{"lessThanOrEqual":"5.15.*","status":"unaffected","version":"5.15.212","versionType":"semver"},{"lessThanOrEqual":"6.1.*","status":"unaffected","version":"6.1.178","versionTy…
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:14b14d702d8a75c96bc8d5c97c62cd8aa98fcd0ea89c6fa5ee33282557a8a367 · sha256:61035fa134cf3581… · /containers/cna/affected/1

Provider-owned CVSS observations

1 source assertion
{"metric":{"baseScore":8.4,"baseSeverity":"HIGH","vectorString":"CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","version":"3.1"},"metric_type":"cvssV3_1"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:14b14d702d8a75c96bc8d5c97c62cd8aa98fcd0ea89c6fa5ee33282557a8a367 · sha256:61035fa134cf3581… · /containers/cna/metrics/0/cvssV3_1

Source references

8 source assertions
{"url":"https://git.kernel.org/stable/c/210c210c92d78fdf5051bc55c5c69044b1a2150a"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:14b14d702d8a75c96bc8d5c97c62cd8aa98fcd0ea89c6fa5ee33282557a8a367 · sha256:61035fa134cf3581… · /containers/cna/references/0
{"url":"https://git.kernel.org/stable/c/2e12381d4495dc8b0ff042c6856022b2e359835c"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:14b14d702d8a75c96bc8d5c97c62cd8aa98fcd0ea89c6fa5ee33282557a8a367 · sha256:61035fa134cf3581… · /containers/cna/references/6
{"url":"https://git.kernel.org/stable/c/550511a2470f6d204fa07b331f048bd2d3c51280"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:14b14d702d8a75c96bc8d5c97c62cd8aa98fcd0ea89c6fa5ee33282557a8a367 · sha256:61035fa134cf3581… · /containers/cna/references/4
{"url":"https://git.kernel.org/stable/c/846c499a65816d13f1186e3090e825e8bb8bcb8b"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:14b14d702d8a75c96bc8d5c97c62cd8aa98fcd0ea89c6fa5ee33282557a8a367 · sha256:61035fa134cf3581… · /containers/cna/references/7
{"url":"https://git.kernel.org/stable/c/8aad54746c251f2c2370118df766c0c82e2d2091"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:14b14d702d8a75c96bc8d5c97c62cd8aa98fcd0ea89c6fa5ee33282557a8a367 · sha256:61035fa134cf3581… · /containers/cna/references/5
{"url":"https://git.kernel.org/stable/c/ad101d15716f5a24d1fa82a849f80430c805a3dd"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:14b14d702d8a75c96bc8d5c97c62cd8aa98fcd0ea89c6fa5ee33282557a8a367 · sha256:61035fa134cf3581… · /containers/cna/references/1
{"url":"https://git.kernel.org/stable/c/d18c81f5d0ecd5796aa47d66d98f2dd54d8d0f70"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:14b14d702d8a75c96bc8d5c97c62cd8aa98fcd0ea89c6fa5ee33282557a8a367 · sha256:61035fa134cf3581… · /containers/cna/references/2
{"url":"https://git.kernel.org/stable/c/d2f236196d542ccd8505736e41c3a1d3f0305f6f"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:14b14d702d8a75c96bc8d5c97c62cd8aa98fcd0ea89c6fa5ee33282557a8a367 · sha256:61035fa134cf3581… · /containers/cna/references/3

Attribution and limitations

  • CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →

Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.

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