FS: JFS: Fix null-ptr-deref Read in txBegin
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.
02 / AFFECTED SOFTWARE
Affected packages
2007 explicit affected versions
03 / CONNECTIONS
Connected vulnerabilities
04 / EVIDENCE
Source records
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.
05 / REFERENCES
Further evidence
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- https://git.kernel.org/stable/c/1b4c144767736221cad92c132f72b3c6ed06a0ea
- https://git.kernel.org/stable/c/2a3f20efe6c901d4c0871cfd1d8c65e2ade71fc1
- https://git.kernel.org/stable/c/3e5eb6c5ecd8ddb9cfea751cf30f9e23eac97ca3
- https://git.kernel.org/stable/c/3e94d0d378d2754b26fc54b429582553f7b53e15
- https://git.kernel.org/stable/c/47cfdc338d674d38f4b2f22b7612cc6a2763ba27
- https://git.kernel.org/stable/c/a7225e9e09519deb7e0c42eb6070029cc456e84d
- https://git.kernel.org/stable/c/a7d17d6bd7cd4f6940b335ea7a6fce5b6d22adc2
- https://git.kernel.org/stable/c/fd2db13fb72ff18c633a48229589d42ceb89d1f8
- https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/53xxx/CVE-2023-53457.json
- https://nvd.nist.gov/vuln/detail/CVE-2023-53457