🛡️ CVE-2024-53235 — kernel

🟡 CVSS 5.5 — Medium ✅ No Known Exploit NVD
5.5
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

erofs: fix file-backed mounts over FUSE

In the Linux kernel, the following vulnerability has been resolved:

erofs: fix file-backed mounts over FUSE

syzbot reported a null-ptr-deref in fuse_read_args_fill:

fuse_read_folio+0xb0/0x100 fs/fuse/file.c:905

filemap_read_folio+0xc6/0x2a0 mm/filemap.c:2367

do_read_cache_folio+0x263/0x5c0 mm/filemap.c:3825

read_mapping_folio include/linux/pagemap.h:1011 [inline]

erofs_bread+0x34d/0x7e0 fs/erofs/data.c:41

erofs_read_superblock fs/erofs/super.c:281 [inline]

erofs_fc_fill_super+0x2b9/0x2500 fs/erofs/super.c:625

Unlike most filesystems, some network filesystems and FUSE need

unavoidable valid file pointers for their read I/Os [1].

Anyway, those use cases need to be supported too.

[1] https://docs.kernel.org/filesystems/vfs.html

How this vulnerability can be exploited

This issue can be reached with local access to the system, attack complexity is low, an attacker needs low-level privileges on the target. No user interaction is required. The scope is unchanged, so the impact stays within the vulnerable component. Rated impact: confidentiality none, integrity none, availability high.

Affected software

CVE-2024-53235 is recorded against 2 packages.

  • kernel (from 6.12.0 up to 6.12.2)
  • linux-kernel (from 6.12 up to 6.12.2)

Timeline and source

Published on 27 December 2024 and last revised on 15 July 2026. No public exploit is currently recorded for this entry. A vendor advisory or fix has been published. Record sourced from NVD.

References

git.kernel.org (Web)
git.kernel.org (Web)
github.com (Advisory)
nvd.nist.gov (Advisory)
git.kernel.org (Package)

CVE-2024-53235 on other distributions

Each distribution ships its own build and its own fixed version. Pick the one you run:

Details

Severity Medium
CVSS Score 5.5
CVSS Vector CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CWE N/A
Public Exploit ✅ No
Source NVD
Published 2024-12-27
Updated 2026-08-12
Modified 2026-07-15

Affected Packages

Software From version Fixed in
kernel 6.12.0 6.12.2
linux-kernel 6.12 6.12.2

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