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CVE-2026-43420

In the Linux kernel, the following vulnerability has been resolved: ceph: fix i_nlink underrun during async unlink During async unlink, we drop the `i_nlink` counter before we receive the completion (that will eventually update the `i_nlink`) because "we assume that the unlink will succeed". That is not a bad idea, but it races against deletions by other clients (or against the completion of our own unlink) and can lead to an underrun which emits a WARNING like this one: WARNING: CPU: 85 PI
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:71c3217cc0a560e223450502efdefd419af796c26baf0244f6e93c901ab55876
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":"affected","product":"Linux","programFiles":["fs/ceph/dir.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"5.7"},{"lessThan":"5.7","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"5.10.*","status":"unaffected","version":"5.10.253","versionType":"semver"},{"lessThanOrEqual":"5.15.*","status":"unaffected","version":"5.15.203","versionType":"semver"},{"lessThanOrEqual":"6.1.*","status":"unaffected","version":"6.1.167","versionType":"semver"},{"lessThanOrEqual":…

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:e8640ea3f5f8ea5cacb5973108eded59c7c4098ee924c2a95546e18277eb694e · sha256:1a3b874834a75eb0… · /containers/cna/affected/1

{"defaultStatus":"unaffected","product":"Linux","programFiles":["fs/ceph/dir.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"9b31e88ac5623d15c8bc46f69dfe1d3b43a8f67c","status":"affected","version":"2ccb45462aeaf0831397b90d31d3d50a7704fa1f","versionType":"git"},{"lessThan":"6d5fd8bb574bef039eb3b738e523870433a2aeb9","status":"affected","version":"2ccb45462aeaf0831397b90d31d3d50a7704fa1f","versionType":"git"},{"lessThan":"fcc477a6e8856c8a42b3c9e171724d8d6dfadd06","status":"affected","version":"2ccb45462aeaf0831397b90d31d3d50a…

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:e8640ea3f5f8ea5cacb5973108eded59c7c4098ee924c2a95546e18277eb694e · sha256:1a3b874834a75eb0… · /containers/cna/affected/0

Affected products and versions

2 source assertions
{"defaultStatus":"affected","product":"Linux","programFiles":["fs/ceph/dir.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"5.7"},{"lessThan":"5.7","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"5.10.*","status":"unaffected","version":"5.10.253","versionType":"semver"},{"lessThanOrEqual":"5.15.*","status":"unaffected","version":"5.15.203","versionType":"semver"},{"lessThanOrEqual":"6.1.*","status":"unaffected","version":"6.1.167","versionType":"semver"},{"lessThanOrEqual":…
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:e8640ea3f5f8ea5cacb5973108eded59c7c4098ee924c2a95546e18277eb694e · sha256:1a3b874834a75eb0… · /containers/cna/affected/1
{"defaultStatus":"unaffected","product":"Linux","programFiles":["fs/ceph/dir.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"9b31e88ac5623d15c8bc46f69dfe1d3b43a8f67c","status":"affected","version":"2ccb45462aeaf0831397b90d31d3d50a7704fa1f","versionType":"git"},{"lessThan":"6d5fd8bb574bef039eb3b738e523870433a2aeb9","status":"affected","version":"2ccb45462aeaf0831397b90d31d3d50a7704fa1f","versionType":"git"},{"lessThan":"fcc477a6e8856c8a42b3c9e171724d8d6dfadd06","status":"affected","version":"2ccb45462aeaf0831397b90d31d3d50a…
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:e8640ea3f5f8ea5cacb5973108eded59c7c4098ee924c2a95546e18277eb694e · sha256:1a3b874834a75eb0… · /containers/cna/affected/0

Source references

8 source assertions
{"url":"https://git.kernel.org/stable/c/6d5fd8bb574bef039eb3b738e523870433a2aeb9"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:e8640ea3f5f8ea5cacb5973108eded59c7c4098ee924c2a95546e18277eb694e · sha256:1a3b874834a75eb0… · /containers/cna/references/1
{"url":"https://git.kernel.org/stable/c/7db008e85a5d17b64bc5390b828bf457ae91a415"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:e8640ea3f5f8ea5cacb5973108eded59c7c4098ee924c2a95546e18277eb694e · sha256:1a3b874834a75eb0… · /containers/cna/references/5
{"url":"https://git.kernel.org/stable/c/8975b85b0d45ca811ace6fac5907652f2310e5ac"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:e8640ea3f5f8ea5cacb5973108eded59c7c4098ee924c2a95546e18277eb694e · sha256:1a3b874834a75eb0… · /containers/cna/references/6
{"url":"https://git.kernel.org/stable/c/9b31e88ac5623d15c8bc46f69dfe1d3b43a8f67c"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:e8640ea3f5f8ea5cacb5973108eded59c7c4098ee924c2a95546e18277eb694e · sha256:1a3b874834a75eb0… · /containers/cna/references/0
{"url":"https://git.kernel.org/stable/c/aedd29386b23f3e1e6818943e11abfff2953732f"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:e8640ea3f5f8ea5cacb5973108eded59c7c4098ee924c2a95546e18277eb694e · sha256:1a3b874834a75eb0… · /containers/cna/references/4
{"url":"https://git.kernel.org/stable/c/b3f5513141ecc6b277a8f7b7efe58a0cf9a5e859"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:e8640ea3f5f8ea5cacb5973108eded59c7c4098ee924c2a95546e18277eb694e · sha256:1a3b874834a75eb0… · /containers/cna/references/3
{"url":"https://git.kernel.org/stable/c/ce0123cbb4a40a2f1bbb815f292b26e96088639f"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:e8640ea3f5f8ea5cacb5973108eded59c7c4098ee924c2a95546e18277eb694e · sha256:1a3b874834a75eb0… · /containers/cna/references/7
{"url":"https://git.kernel.org/stable/c/fcc477a6e8856c8a42b3c9e171724d8d6dfadd06"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:e8640ea3f5f8ea5cacb5973108eded59c7c4098ee924c2a95546e18277eb694e · sha256:1a3b874834a75eb0… · /containers/cna/references/2

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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