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: linux kernel
References9
- git.kernel.org/stable/c/0183c8f46ab5bcd0740f41c87f5141c6ca2bf1bb Patch
- git.kernel.org/stable/c/10b87da8fae79c7daf5eda6a9e4f1d31b85b4d92 Patch
- git.kernel.org/stable/c/25e70c6162f207828dd405b432d8f2a98dbf7082 Patch
- git.kernel.org/stable/c/3d340b684dcec5e34efc470227cd1c7d2df121ad Patch
- git.kernel.org/stable/c/50163a115831ef4e6402db5a7ef487d1989d7249 Patch
- git.kernel.org/stable/c/624843f1bac448150f6859999c72c4841c14a2e3 Patch
- git.kernel.org/stable/c/911999b193735cd378517b6cd5fe585ee345d49c Patch
- git.kernel.org/stable/c/ab5cd3d62c2493eca3337e7d0178cc7bd819ca64 Patch
- git.kernel.org/stable/c/f8d4d0bac603616e2fa4a3907e81ed13f8f3c380 Patch
Metrics
- CVSS 3.1
-
7.1
HIGH
Score source: NVD
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H - EPSS — exploit probability
- 0% percentile: 7 · as of 8 November 2026
- CWE
- CWE-125
Could this be exploited in your environment?
A patch closes the known hole. A penetration test shows what an attacker can still reach — with proof.