Bug 2400810 (CVE-2023-53457) - CVE-2023-53457 kernel: FS: JFS: Fix null-ptr-deref Read in txBegin
Summary: CVE-2023-53457 kernel: FS: JFS: Fix null-ptr-deref Read in txBegin
Keywords:
Status: NEW
Alias: CVE-2023-53457
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Product Security DevOps Team
QA Contact:
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2025-10-01 12:08 UTC by OSIDB Bzimport
Modified: 2025-10-06 13:10 UTC (History)
0 users

Fixed In Version:
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Description OSIDB Bzimport 2025-10-01 12:08:40 UTC 
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.
Comment 1 Jon Moroney 2025-10-01 18:14:54 UTC 
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2025100105-CVE-2023-53457-629a@gregkh/T
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