CVE-2022-50839

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.

CVSS

No CVSS.

References

Link	Resource
https://git.kernel.org/stable/c/68ed9c76b2affd47177b92495446abb7262d0ef7
https://git.kernel.org/stable/c/7a33dde572fceb45d02d188e0213c47059401c93
https://git.kernel.org/stable/c/9b073d73725366d886b711b74e058c02f51e7a0e
https://git.kernel.org/stable/c/e0d5fc7a6d80ac2406c7dfc6bb625201d0250a8a
https://git.kernel.org/stable/c/e7385c868ee038d6a0cb0e85c22d2741e7910fd5

Configurations

No configuration.

History

No history.

Information

Published : 2025-12-30 13:15

Updated : 2026-06-17 05:24

NVD link : CVE-2022-50839

Mitre link : CVE-2022-50839

CVE.ORG link : CVE-2022-50839

JSON object : View

Products Affected

No product.

CWE

No CWE.

{"id": "CVE-2022-50839", "cveTags": [], "metrics": {}, "affected": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "affectedData": [{"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "ff780b91efe901b8eecd8114785abae5341820ad", "lessThan": "7a33dde572fceb45d02d188e0213c47059401c93", "versionType": "git"}, {"status": "affected", "version": "ff780b91efe901b8eecd8114785abae5341820ad", "lessThan": "e7385c868ee038d6a0cb0e85c22d2741e7910fd5", "versionType": "git"}, {"status": "affected", "version": "ff780b91efe901b8eecd8114785abae5341820ad", "lessThan": "68ed9c76b2affd47177b92495446abb7262d0ef7", "versionType": "git"}, {"status": "affected", "version": "ff780b91efe901b8eecd8114785abae5341820ad", "lessThan": "9b073d73725366d886b711b74e058c02f51e7a0e", "versionType": "git"}, {"status": "affected", "version": "ff780b91efe901b8eecd8114785abae5341820ad", "lessThan": "e0d5fc7a6d80ac2406c7dfc6bb625201d0250a8a", "versionType": "git"}], "programFiles": ["fs/jbd2/journal.c"], "defaultStatus": "unaffected"}, {"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "5.10"}, {"status": "unaffected", "version": "0", "lessThan": "5.10", "versionType": "semver"}, {"status": "unaffected", "version": "5.10.150", "versionType": "semver", "lessThanOrEqual": "5.10.*"}, {"status": "unaffected", "version": "5.15.75", "versionType": "semver", "lessThanOrEqual": "5.15.*"}, {"status": "unaffected", "version": "5.19.17", "versionType": "semver", "lessThanOrEqual": "5.19.*"}, {"status": "unaffected", "version": "6.0.3", "versionType": "semver", "lessThanOrEqual": "6.0.*"}, {"status": "unaffected", "version": "6.1", "versionType": "original_commit_for_fix", "lessThanOrEqual": "*"}], "programFiles": ["fs/jbd2/journal.c"], "defaultStatus": "affected"}]}], "published": "2025-12-30T13:15:58.463", "references": [{"url": "https://git.kernel.org/stable/c/68ed9c76b2affd47177b92495446abb7262d0ef7", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/7a33dde572fceb45d02d188e0213c47059401c93", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/9b073d73725366d886b711b74e058c02f51e7a0e", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/e0d5fc7a6d80ac2406c7dfc6bb625201d0250a8a", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/e7385c868ee038d6a0cb0e85c22d2741e7910fd5", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "vulnStatus": "Deferred", "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\njbd2: fix potential buffer head reference count leak\n\nAs in 'jbd2_fc_wait_bufs' if buffer isn't uptodate, will return -EIO without\nupdate 'journal->j_fc_off'. But 'jbd2_fc_release_bufs' will release buffer head\nfrom \u2018j_fc_off - 1\u2019 if 'bh' is NULL will terminal release which will lead to\nbuffer head buffer head reference count leak.\nTo solve above issue, update 'journal->j_fc_off' before return -EIO."}], "lastModified": "2026-06-17T05:24:16.547", "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}