PT-2025-3652 · Linux+1 · Linux Kernel+1

Max Kellermann · Published 2024-12-13 · Updated 2025-09-29 · CVE-2024-57927

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 (affected versions not specified)

Description The issue arises when netfslib attempts to copy data on behalf of nfs, creating a new write request and calling nfs netfs init request() with a NULL file pointer, causing nfs file open context() to fail. The fix involves returning if no file pointer is given and emitting a warning for non-copy-to-cache requests. Additionally, nfs netfs free request() is modified to not free the context if the pointer is NULL.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

NULL Pointer Dereference

Weakness Enumeration

CWE-476

Related Identifiers

ALSA-2025_16880

ALT-PU-2025-3467

BDU:2025-15886

CVE-2024-57927

Affected Products

Alt Linux

Linux Kernel

References · 23

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/57xxx/CVE-2024-57927.json · Exploit
• https://bdu.fstec.ru/vul/2025-15886 · Security Note
• https://linux.oracle.com/errata/ELSA-2025-20480.html · Vendor Advisory
• https://osv.dev/vulnerability/BELL-CVE-2024-57927 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2024-57927 · Vendor Advisory
• https://git.kernel.org/stable/c/86ad1a58f6a9453f49e06ef957a40a8dac00a13f · Patch
• https://git.kernel.org/stable/c/13a07cc81e2d116cece727a83746c74b87a9d417 · Patch
• https://osv.dev/vulnerability/DEBIAN-CVE-2024-57927 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2024-57927 · Security Note
• https://linux.oracle.com/errata/ELSA-2025-20530.html · Vendor Advisory
• https://ubuntu.com/security/CVE-2024-57927 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2024-57927 · Security Note
• https://security-tracker.debian.org/tracker/CVE-2024-57927 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2024-57927 · Vendor Advisory
• https://git.kernel.org/linus/86ad1a58f6a9453f49e06ef957a40a8dac00a13f · Note