CVE-2024-49968: Linux kernel · ext4: filesystems without casefold feature cannot be mounted with siphash
Affects Linux kernelSource GCVE Database
Not known to be exploited.
Data as of 10 Nov 2026, 14:49 UTC
Rated Low by Threat Radar's AI analysis · No CVSS score from NVD or the CNA
Thin evidence
One scorer or noneExploitation evidence
Disclosed: evidence found.
CVE published 21 Oct 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 10 Nov 2026.
What to do
AI-suggested
A fix has been applied in the Linux kernel to resolve this mounting issue. Users should update to the fixed kernel version once available. No additional mitigation steps are indicated.
Description
A vulnerability in the Linux kernel's ext4 filesystem handling was resolved where filesystems without the casefold feature could not be mounted if the default hash version was set to DX_HASH_SIPHASH. The mounting process exits in this scenario, preventing successful mounting.
References
- git.kernel.org/stable/c/86b81d4eab1cd4c56f7447896232cf33472c2395 (opens in a new tab)
- git.kernel.org/stable/c/11bd1c279bac701ba91119875796ffff3b98250e (opens in a new tab)
- git.kernel.org/stable/c/52c4538a92da6f3242d4140c03ddc5ee71b39ba8 (opens in a new tab)
- git.kernel.org/stable/c/e1373903db6c4ac994de0d18076280ad88e12dee (opens in a new tab)
- git.kernel.org/stable/c/985b67cd86392310d9e9326de941c22fc9340eec (opens in a new tab)
- cert-portal.siemens.com/productcert/html/ssa-019113.html (opens in a new tab)
- cert-portal.siemens.com/productcert/html/ssa-457936.html (opens in a new tab)