CVE-2024-49968: ext4: filesystems without casefold feature cannot be mounted with siphash
Vulnerability summary
CVE-2024-49968 is a medium (CVSS 5.5) vulnerability in linux. EPSS estimates a 0.24% chance of exploitation in the next 30 days, higher than 15.8% of scored vulnerabilities.
Not severe (CVSS 5.5, local access); no exploitation reported by the 5 checked sources
Source freshness unavailable
How is this decided?Advisory lineage
Upstream 0 · Downstream 38 · Related 37Timeline
- 21-10-2024PublishedVulnerability first disclosed.
- 15-10-2026Last modifiedVulnerability information updated.
Description
In the Linux kernel, the following vulnerability has been resolved: ext4: filesystems without casefold feature cannot be mounted with siphash When mounting the ext4 filesystem, if the default hash version is set to DX_HASH_SIPHASH but the casefold feature is not set, exit the mounting.
CVSS metrics
3 scores · 3 sources · 1 version- OSV · UbuntuEcosystem advisory · calculated5.5MediumCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- OSV · DebianEcosystem advisory · calculated5.5MediumCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
EPSS trend
Probability
0.24%
Chance of exploitation in the next 30 days
Percentile
16%
Versus all other CVEs
30-day change
No change 0.00 pp
From 0.24% on 04-10-2026
Known exploited
Compare KEV catalogs
CISA KEVNot in the CISA KEV catalog.
ENISA CNWNot in the ENISA CNW catalog.
CIRCLNot in the CIRCL catalog.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeNo weakness data has been published for this record.
Affected systems
Known conditions: local access, low-privilege account, no user interaction (CVSS vector). Other conditions: not stated in public data.
Ubuntu122 products
- linux< 5.15.0-173.183 | < 6.8.0-56.58
- linux-allwinner-5.19All versions (No fix recorded)
- linux-aws< 5.15.0-1103.110 | < 6.8.0-1025.27
- linux-aws-5.0All versions (No fix recorded)
- linux-aws-5.11All versions (No fix recorded)
Linux2 products
- linux≥ 471fbbea7ff7061b2d6474665cb5a2ceb4fd6500, < 86b81d4eab1cd4c56f7447896232cf33472c2395 | ≥ 471fbbea7ff7061b2d6474665cb5a2ceb4fd6500, < 11bd1c279bac701ba91119875796ffff3b98250e | ≥ 471fbbea7ff7061b2d6474665cb5a2ceb4fd6500, < 52c4538a92da6f3242d4140c03ddc5ee71b39ba8 | ≥ 471fbbea7ff7061b2d6474665cb5a2ceb4fd6500, < e1373903db6c4ac994de0d18076280ad88e12dee | ≥ 471fbbea7ff7061b2d6474665cb5a2ceb4fd6500, < 985b67cd86392310d9e9326de941c22fc9340eec | 5.13
- linux_kernel< 6.11.3
Debian1 product
- linux< 6.1.162-1 | < 6.11.4-1
3 vendors · 125 products
