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CVE-2022-50839

UnknownEPSS 0.21%

Last modified

CVE-2022-50839 is a vulnerability of currently unknown severity. 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.. EPSS estimates a 0.21% chance of exploitation in the next 30 days.

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.

Metrics

EPSS Probability
0.21%

10.8th percentile

Probability of exploitation in the next 30 days. Learn more

Affected Software

Source: CNA advisory (CVE.org). NVD analysis pending.

VendorProductVersions
LinuxLinux>= ff780b91efe901b8eecd8114785abae5341820ad, < 7a33dde572fceb45d02d188e0213c47059401c93; >= ff780b91efe901b8eecd8114785abae5341820ad, < e7385c868ee038d6a0cb0e85c22d2741e7910fd5; >= ff780b91efe901b8eecd8114785abae5341820ad, < 68ed9c76b2affd47177b92495446abb7262d0ef7; >= ff780b91efe901b8eecd8114785abae5341820ad, < 9b073d73725366d886b711b74e058c02f51e7a0e; >= ff780b91efe901b8eecd8114785abae5341820ad, < e0d5fc7a6d80ac2406c7dfc6bb625201d0250a8a
LinuxLinux5.10

References

Timeline

Published
Last Modified
Status
Deferred

Frequently Asked Questions

What is 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.
How severe is CVE-2022-50839?
Severity scoring for CVE-2022-50839 is pending analysis. The EPSS model estimates a 0.21% probability of exploitation in the next 30 days.
How do I fix CVE-2022-50839?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

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Source: NVD / NIST