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.

No CVSS v4.0

Attack Vector Local

Attack Complexity Low

Privileges Required Low

Scope Unchanged

Confidentiality Impact None

Integrity Impact None

Availability Impact High

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

The EPSS score is 0.00023.

Key SSVC decision points have not yet been added.

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
Linux Linux unaffected
Version Status Constraints
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 affected < a7225e9e09519deb7e0c42eb6070029cc456e84d
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 affected < 1b4c144767736221cad92c132f72b3c6ed06a0ea
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 affected < a7d17d6bd7cd4f6940b335ea7a6fce5b6d22adc2
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 affected < 2a3f20efe6c901d4c0871cfd1d8c65e2ade71fc1
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 affected < 3e94d0d378d2754b26fc54b429582553f7b53e15
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 affected < 3e5eb6c5ecd8ddb9cfea751cf30f9e23eac97ca3
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 affected < fd2db13fb72ff18c633a48229589d42ceb89d1f8
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 affected < 47cfdc338d674d38f4b2f22b7612cc6a2763ba27
Linux Linux affected
Version Status Constraints
2.6.12 affected —
0 unaffected < 2.6.12
4.14.324 unaffected ≤ 4.14.*
4.19.293 unaffected ≤ 4.19.*
5.4.255 unaffected ≤ 5.4.*
5.10.192 unaffected ≤ 5.10.*
5.15.123 unaffected ≤ 5.15.*
6.1.42 unaffected ≤ 6.1.*
6.4.7 unaffected ≤ 6.4.*
6.5 unaffected ≤ *

Configuration 1 [-]

OR cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:2.6.12:-:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:2.6.12:rc2:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:2.6.12:rc3:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:2.6.12:rc4:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:2.6.12:rc5:*:*:*:*:*:*

No data.

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Advisories

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Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References
Link Providers
https://git.kernel.org/stable/c/1b4c144767736221cad92c132f72b3c6ed06a0ea cve-icon cve-icon
https://git.kernel.org/stable/c/2a3f20efe6c901d4c0871cfd1d8c65e2ade71fc1 cve-icon cve-icon
https://git.kernel.org/stable/c/3e5eb6c5ecd8ddb9cfea751cf30f9e23eac97ca3 cve-icon cve-icon
https://git.kernel.org/stable/c/3e94d0d378d2754b26fc54b429582553f7b53e15 cve-icon cve-icon
https://git.kernel.org/stable/c/47cfdc338d674d38f4b2f22b7612cc6a2763ba27 cve-icon cve-icon
https://git.kernel.org/stable/c/a7225e9e09519deb7e0c42eb6070029cc456e84d cve-icon cve-icon
https://git.kernel.org/stable/c/a7d17d6bd7cd4f6940b335ea7a6fce5b6d22adc2 cve-icon cve-icon
https://git.kernel.org/stable/c/fd2db13fb72ff18c633a48229589d42ceb89d1f8 cve-icon cve-icon
https://lore.kernel.org/linux-cve-announce/2025100105-CVE-2023-53457-629a@gregkh/T cve-icon
https://nvd.nist.gov/vuln/detail/CVE-2023-53457 cve-icon
https://www.cve.org/CVERecord?id=CVE-2023-53457 cve-icon
History

Fri, 16 Jan 2026 21:00:00 +0000

Type Values Removed Values Added
Weaknesses CWE-476
CPEs cpe:2.3:o:linux:linux_kernel:2.6.12:-:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:2.6.12:rc2:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:2.6.12:rc3:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:2.6.12:rc4:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:2.6.12:rc5:*:*:*:*:*:*
Metrics cvssV3_1

{'score': 7.0, 'vector': 'CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H'}

 cvssV3_1

{'score': 5.5, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H'}

Mon, 05 Jan 2026 10:45:00 +0000

Type Values Removed Values Added
CPEs cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*

Thu, 02 Oct 2025 09:00:00 +0000

Type Values Removed Values Added
First Time appeared Linux
Linux linux Kernel
Vendors & Products Linux
Linux linux Kernel

Thu, 02 Oct 2025 00:15:00 +0000

Type Values Removed Values Added
References
Metrics threat_severity

None

 cvssV3_1

{'score': 7.0, 'vector': 'CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H'}

threat_severity

Moderate

Wed, 01 Oct 2025 12:00:00 +0000

Type Values Removed Values Added
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.
Title FS: JFS: Fix null-ptr-deref Read in txBegin
References

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: Linux

Published:

Updated: 2026-01-05T10:20:45.270Z

Reserved: 2025-09-17T14:54:09.755Z

Link: CVE-2023-53457

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Analyzed

Published: 2025-10-01T12:15:47.007

Modified: 2026-01-16T20:59:21.080

Link: CVE-2023-53457

cve-icon Redhat

Severity : Moderate

Publid Date: 2025-10-01T00:00:00Z

Links: CVE-2023-53457 - Bugzilla

cve-icon OpenCVE Enrichment

Updated: 2025-10-02T08:39:45Z

Weaknesses