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CVE-2025-68807

In the Linux kernel, the following vulnerability has been resolved: block: fix race between wbt_enable_default and IO submission When wbt_enable_default() is moved out of queue freezing in elevator_change(), it can cause the wbt inflight counter to become negative (-1), leading to hung tasks in the writeback path. Tasks get stuck in wbt_wait() because the counter is in an inconsistent state. The issue occurs because wbt_enable_default() could race with IO submission, allowing the counter to b
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:f5bb418536c28e67720b0b59c5a5a0bc019fdb5149c51d2e21d3e2e903be6738
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":["block/bfq-iosched.c","block/blk-sysfs.c","block/blk-wbt.c","block/blk-wbt.h","block/elevator.c","block/elevator.h"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"6.16"},{"lessThan":"6.16","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.3","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"6.19","versionType":"original_commit_for_fix"}]}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:91d4497fb2766660a8827dff4f002fe4276c6981f8e0aa5c502d6efece2f88af · sha256:2f0375fffe81de63… · /containers/cna/affected/1

{"defaultStatus":"unaffected","product":"Linux","programFiles":["block/bfq-iosched.c","block/blk-sysfs.c","block/blk-wbt.c","block/blk-wbt.h","block/elevator.c","block/elevator.h"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"f55201fb3becff6a903fd29f4d1147cc7e91eb0c","status":"affected","version":"78c271344b6f64ce24c845e54903e09928cf2061","versionType":"git"},{"lessThan":"9869d3a6fed381f3b98404e26e1afc75d680cbf9","status":"affected","version":"78c271344b6f64ce24c845e54903e09928cf2061","versionType":"git"}]}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:91d4497fb2766660a8827dff4f002fe4276c6981f8e0aa5c502d6efece2f88af · sha256:2f0375fffe81de63… · /containers/cna/affected/0

Affected products and versions

2 source assertions
{"defaultStatus":"affected","product":"Linux","programFiles":["block/bfq-iosched.c","block/blk-sysfs.c","block/blk-wbt.c","block/blk-wbt.h","block/elevator.c","block/elevator.h"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"6.16"},{"lessThan":"6.16","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.3","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"6.19","versionType":"original_commit_for_fix"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:91d4497fb2766660a8827dff4f002fe4276c6981f8e0aa5c502d6efece2f88af · sha256:2f0375fffe81de63… · /containers/cna/affected/1
{"defaultStatus":"unaffected","product":"Linux","programFiles":["block/bfq-iosched.c","block/blk-sysfs.c","block/blk-wbt.c","block/blk-wbt.h","block/elevator.c","block/elevator.h"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"f55201fb3becff6a903fd29f4d1147cc7e91eb0c","status":"affected","version":"78c271344b6f64ce24c845e54903e09928cf2061","versionType":"git"},{"lessThan":"9869d3a6fed381f3b98404e26e1afc75d680cbf9","status":"affected","version":"78c271344b6f64ce24c845e54903e09928cf2061","versionType":"git"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:91d4497fb2766660a8827dff4f002fe4276c6981f8e0aa5c502d6efece2f88af · sha256:2f0375fffe81de63… · /containers/cna/affected/0

Source references

2 source assertions
{"url":"https://git.kernel.org/stable/c/9869d3a6fed381f3b98404e26e1afc75d680cbf9"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:91d4497fb2766660a8827dff4f002fe4276c6981f8e0aa5c502d6efece2f88af · sha256:2f0375fffe81de63… · /containers/cna/references/1
{"url":"https://git.kernel.org/stable/c/f55201fb3becff6a903fd29f4d1147cc7e91eb0c"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:91d4497fb2766660a8827dff4f002fe4276c6981f8e0aa5c502d6efece2f88af · sha256:2f0375fffe81de63… · /containers/cna/references/0

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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