What’s Vulnerable › Vulnerabilities

CVE-2022-50333: fs: jfs: fix shift-out-of-bounds in dbDiscardAG

• Severity: high (CVSS 7.1 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2025-09-15 · updated 2026-08-04
• Weakness: CWE-125

Description

In the Linux kernel, the following vulnerability has been resolved: fs: jfs: fix shift-out-of-bounds in dbDiscardAG This should be applied to most URSAN bugs found recently by syzbot, by guarding the dbMount. As syzbot feeding rubbish into the bmap descriptor.

Affected products

• Linux kernel: before 4.9.337; from 4.10 before 4.14.303; from 4.15 before 4.19.270; from 4.20 before 5.4.229; from 5.5 before 5.10.163; from 5.11 before 5.15.86 — fixed in 4.14.303, 4.19.270, 4.9.337, 5.10.163, 5.15.86, 5.4.229

How to fix

Upgrade to a fixed version: Linux kernel 4.14.303, 4.19.270, 4.9.337, 5.10.163. Check the vendor advisory for mitigations.

References

• https://git.kernel.org/stable/c/0183c8f46ab5bcd0740f41c87f5141c6ca2bf1bb
• https://git.kernel.org/stable/c/10b87da8fae79c7daf5eda6a9e4f1d31b85b4d92
• https://git.kernel.org/stable/c/25e70c6162f207828dd405b432d8f2a98dbf7082
• https://git.kernel.org/stable/c/3d340b684dcec5e34efc470227cd1c7d2df121ad
• https://git.kernel.org/stable/c/50163a115831ef4e6402db5a7ef487d1989d7249
• https://git.kernel.org/stable/c/624843f1bac448150f6859999c72c4841c14a2e3
• https://git.kernel.org/stable/c/911999b193735cd378517b6cd5fe585ee345d49c
• https://git.kernel.org/stable/c/ab5cd3d62c2493eca3337e7d0178cc7bd819ca64
• https://git.kernel.org/stable/c/f8d4d0bac603616e2fa4a3907e81ed13f8f3c380

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