CVE-2025-39878 — NULL Pointer Dereference in Linux

CWE-476 — NULL Pointer Dereference5 documents5 sources
Severity
5.5MEDIUMNVD
EPSS
0.0%
top 94.52%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
3
LinuxLinux KernelDebian Linux
Timeline
PublishedSep 23

Description

In the Linux kernel, the following vulnerability has been resolved: ceph: fix crash after fscrypt_encrypt_pagecache_blocks() error The function move_dirty_folio_in_page_array() was created by commit ce80b76dd327 ("ceph: introduce ceph_process_folio_batch() method") by moving code from ceph_writepages_start() to this function. This new function is supposed to return an error code which is checked by the caller (now ceph_process_folio_batch()), and on error, the caller invokes redirty_page_for_…

CVSS vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:HExploitability: 1.8 | Impact: 3.6

Affected Packages4 packages

▶NVDlinux/linux_kernel6.15 — 6.16.8+1
▶Debianlinux/linux_kernel< 6.16.8-1
▶CVEListV5linux/linuxce80b76dd32764cc914975777e058d4fae4f0ea0 — dd1616ecbea920d228c56729461ed223cc501425+2
▶debiandebian/linux< linux 6.16.8-1 (forky)

Patches

Patch: git.kernel.org ↗Patch: git.kernel.org ↗

🔴Vulnerability Details

2
GHSA
GHSA-wmpp-p439-v4x7: In the Linux kernel, the following vulnerability has been resolved: ceph: fix crash after fscrypt_encrypt_pagecache_blocks() error The function move↗2025-09-23
▶
OSV
CVE-2025-39878: In the Linux kernel, the following vulnerability has been resolved: ceph: fix crash after fscrypt_encrypt_pagecache_blocks() error The function move_d↗2025-09-23
▶

📋Vendor Advisories

2
Red Hat
kernel: ceph: fix crash after fscrypt_encrypt_pagecache_blocks() error↗2025-09-23
▶
Debian
CVE-2025-39878: linux - In the Linux kernel, the following vulnerability has been resolved: ceph: fix c...↗2025
▶
CVE-2025-39878 — NULL Pointer Dereference in Linux | cvebase