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Description

In the Linux kernel, the following vulnerability has been resolved: jbd2: fix potential buffer head reference count leak As in 'jbd2_fc_wait_bufs' if buffer isn't uptodate, will return -EIO without update 'journal->j_fc_off'. But 'jbd2_fc_release_bufs' will release buffer head from ‘j_fc_off - 1’ if 'bh' is NULL will terminal release which will lead to buffer head buffer head reference count leak. To solve above issue, update 'journal->j_fc_off' before return -EIO.

PUBLISHED Reserved 2025-12-30 | Published 2025-12-30 | Updated 2026-01-02 | Assigner Linux

Product status

Default status
unaffected

ff780b91efe901b8eecd8114785abae5341820ad (git) before 7a33dde572fceb45d02d188e0213c47059401c93
affected

ff780b91efe901b8eecd8114785abae5341820ad (git) before e7385c868ee038d6a0cb0e85c22d2741e7910fd5
affected

ff780b91efe901b8eecd8114785abae5341820ad (git) before 68ed9c76b2affd47177b92495446abb7262d0ef7
affected

ff780b91efe901b8eecd8114785abae5341820ad (git) before 9b073d73725366d886b711b74e058c02f51e7a0e
affected

ff780b91efe901b8eecd8114785abae5341820ad (git) before e0d5fc7a6d80ac2406c7dfc6bb625201d0250a8a
affected

Default status
affected

5.10
affected

Any version before 5.10
unaffected

5.10.150 (semver)
unaffected

5.15.75 (semver)
unaffected

5.19.17 (semver)
unaffected

6.0.3 (semver)
unaffected

6.1 (original_commit_for_fix)
unaffected

References

git.kernel.org/...c/7a33dde572fceb45d02d188e0213c47059401c93

git.kernel.org/...c/e7385c868ee038d6a0cb0e85c22d2741e7910fd5

git.kernel.org/...c/68ed9c76b2affd47177b92495446abb7262d0ef7

git.kernel.org/...c/9b073d73725366d886b711b74e058c02f51e7a0e

git.kernel.org/...c/e0d5fc7a6d80ac2406c7dfc6bb625201d0250a8a

cve.org (CVE-2022-50839)

nvd.nist.gov (CVE-2022-50839)

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