CVE-2024-35956: Linux kernel · Memory Leak
Source GCVE Database
Not known to be exploited · CVSS 5.5 Medium.
Data as of 30 Oct 2026, 00:35 UTC
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:HExploitation evidence
Disclosed: evidence found.
CVE published 20 May 2024
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 29 Oct 2026.
What to do
AI-suggested
A fix for this vulnerability has been implemented in the Linux kernel. Users should apply the official kernel updates containing this patch to resolve the qgroup prealloc reservation leak. Until patched, systems with quota groups enabled and using Btrfs subvolume operations may experience resource leaks and warnings on unmount in debug builds.
Description
CVE-2024-35956 is a medium-severity vulnerability in the Linux kernel's Btrfs filesystem quota group (qgroup) subsystem. It involves a reservation leak of qgroup preallocation metadata during subvolume operations such as create, snapshot, and delete. The flaw occurs because error paths improperly convert reservation types without correctly freeing them, leading to resource leaks and warnings on unmount in debug builds.
References
- nvd.nist.gov/vuln/detail/CVE-2024-35956 (opens in a new tab)
- git.kernel.org/stable/c/14431815a4ae4bcd7c7a68b6a64c66c7712d27c9 (opens in a new tab)
- git.kernel.org/stable/c/6c95336f5d8eb9ab79cd7306d71b6d0477363f8c (opens in a new tab)
- git.kernel.org/stable/c/74e97958121aa1f5854da6effba70143f051b0cd (opens in a new tab)
- git.kernel.org/stable/c/945559be6e282a812dc48f7bcd5adc60901ea4a0 (opens in a new tab)
- lists.debian.org/debian-lts-announce/2025/03/msg00001.html (opens in a new tab)