CVE-2023-53457
Medium
Description
In the Linux kernel, the following vulnerability has been resolved: FS: JFS: Fix null-ptr-deref Read in txBegin Syzkaller reported an issue where txBegin may be called on a superblock in a read-only mounted filesystem which leads to NULL pointer deref. This could be solved by checking if the filesystem is read-only before calling txBegin, and returning with appropiate error code.
SeverityMedium
CVSS5.5
Exploit probability—
Product
Linux Kernel
PublishedOct 1, 2025
First seenOct 1, 2025
Weakness typeCWE-476NULL pointer dereference
How to fix
Update
- linux linux_kernel4.14.324, 4.19.293, 5.4.255, 5.10.192, 5.15.123, 6.1.42, 6.4.7 or later
Patches
- git.kernel.org/stable/c/1b4c144767736221cad92c132f72b3c6ed06a0ea
- git.kernel.org/stable/c/2a3f20efe6c901d4c0871cfd1d8c65e2ade71fc1
- git.kernel.org/stable/c/3e5eb6c5ecd8ddb9cfea751cf30f9e23eac97ca3
- git.kernel.org/stable/c/3e94d0d378d2754b26fc54b429582553f7b53e15
- git.kernel.org/stable/c/47cfdc338d674d38f4b2f22b7612cc6a2763ba27
- git.kernel.org/stable/c/a7225e9e09519deb7e0c42eb6070029cc456e84d
- git.kernel.org/stable/c/a7d17d6bd7cd4f6940b335ea7a6fce5b6d22adc2
- git.kernel.org/stable/c/fd2db13fb72ff18c633a48229589d42ceb89d1f8
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| linux linux_kernel | 2.6.12.1 ≤ v < 4.14.324, 4.15 ≤ v < 4.19.293, 4.20 ≤ v < 5.4.255, 5.5 ≤ v < 5.10.192, 5.11 ≤ v < 5.15.123, 5.16 ≤ v < 6.1.42, 6.2 ≤ v < 6.4.7, 2.6.12 | 4.14.324, 4.19.293, 5.4.255, 5.10.192, 5.15.123, 6.1.42, 6.4.7 |
Check your version
Choose the product and enter the version you run to see whether it falls in the affected range.
In the Intelligence 360 plan
Attack Surface Management
See the assets tied to your domains, the technologies they run and known vulnerabilities in one list.