CVE-2023-53457

Summary

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.

Affected Software

VendorProductVersion RangeStatus
LinuxLinux1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < a7225e9e09519deb7e0c42eb6070029cc456e84daffected
LinuxLinux1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 1b4c144767736221cad92c132f72b3c6ed06a0eaaffected
LinuxLinux1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < a7d17d6bd7cd4f6940b335ea7a6fce5b6d22adc2affected
LinuxLinux1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 2a3f20efe6c901d4c0871cfd1d8c65e2ade71fc1affected
LinuxLinux1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 3e94d0d378d2754b26fc54b429582553f7b53e15affected
LinuxLinux1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 3e5eb6c5ecd8ddb9cfea751cf30f9e23eac97ca3affected
LinuxLinux1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < fd2db13fb72ff18c633a48229589d42ceb89d1f8affected
LinuxLinux1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 47cfdc338d674d38f4b2f22b7612cc6a2763ba27affected
LinuxLinux2.6.12affected
LinuxLinux0 < 2.6.12unaffected
LinuxLinux4.14.324 <= 4.14.*unaffected
LinuxLinux4.19.293 <= 4.19.*unaffected
LinuxLinux5.4.255 <= 5.4.*unaffected
LinuxLinux5.10.192 <= 5.10.*unaffected
LinuxLinux5.15.123 <= 5.15.*unaffected
LinuxLinux6.1.42 <= 6.1.*unaffected
LinuxLinux6.4.7 <= 6.4.*unaffected
LinuxLinux6.5 <= *unaffected

Weaknesses

References