PT-2025-3648 · Linux · Linux Kernel

Published 2025-01-06 · Updated 2025-01-21 · CVE-2024-57923

Positive Technologies (AI Summary)

CVSS v3.1

5.5

Medium

Base vector

AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Name of the Vulnerable Software and Affected Versions Linux kernel versions prior to the fixed version

Description The issue is related to the btrfs compression functionality in the Linux kernel, specifically with the zlib compression path for S390 hardware acceleration. The problem arises when the input data length passed to zlib compress folios() can be arbitrary, potentially causing read-in bytes to exceed the input range. This triggers an assertion failure in btrfs compress folios() on the debug kernel. The fix involves correcting the strm.avail in calculation for the S390 hardware acceleration path.

Recommendations To resolve the issue, update the Linux kernel to a version that includes the fix for the strm.avail in calculation in the btrfs compression functionality. At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

Out of bounds Read

Assertion Failure

Weakness Enumeration

CWE-125

CWE-617

Related Identifiers

BDU:2026-04398

CVE-2024-57923

Affected Products

Linux Kernel

References · 22

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/57xxx/CVE-2024-57923.json · Exploit
• https://osv.dev/vulnerability/BELL-CVE-2024-57923 · Vendor Advisory
• https://security-tracker.debian.org/tracker/CVE-2024-57923 · Vendor Advisory
• https://linux.oracle.com/errata/ELSA-2025-20480.html · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2024-57923 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2024-57923 · Security Note
• https://osv.dev/vulnerability/CVE-2024-57923 · Vendor Advisory
• https://git.kernel.org/stable/c/25adbb08aeadcff883ab801df99fd20fefbb6ca4 · Patch
• https://ubuntu.com/security/CVE-2024-57923 · Vendor Advisory
• https://osv.dev/vulnerability/DEBIAN-CVE-2024-57923 · Vendor Advisory
• https://linux.oracle.com/errata/ELSA-2025-20530.html · Vendor Advisory
• https://bdu.fstec.ru/vul/2026-04398 · Security Note
• https://cve.org/CVERecord?id=CVE-2024-57923 · Security Note
• https://git.kernel.org/stable/c/0ee4736c003daded513de0ff112d4a1e9c85bbab · Patch
• https://twitter.com/VulmonFeeds/status/1881011465672372719 · Twitter Post