7.8

CVE-2024-46780: nilfs2: protect references to superblock parameters exposed in sysfs

Modified
AliasesUBUNTU-CVE-2024-46780DEBIAN-CVE-2024-46780
Published 18-09-2024Last modified 05-08-2026

Vulnerability summary

CVE-2024-46780 is a high (CVSS 7.8) vulnerability in linux. EPSS estimates a 0.24% chance of exploitation in the next 30 days, higher than 14.8% of scored vulnerabilities.

Priority
Routine

Not severe (CVSS 7.8, local access); no exploitation reported by the 5 checked sources

Source freshness unavailable

How is this decided?
CVSS score
7.8/10
010
High · v3.1 (CVE.org)
EPSS score
0.24%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 39 · Related 33
DLA-3912-1DLA-4008-1DSA-5782-1MGASA-2024-0316MGASA-2024-0318SUSE-SU-2024:3551-1

Timeline

  1. 18-09-2024
    PublishedVulnerability first disclosed.
  2. 05-08-2026
    Last modifiedVulnerability information updated.

Description

In the Linux kernel, the following vulnerability has been resolved: nilfs2: protect references to superblock parameters exposed in sysfs The superblock buffers of nilfs2 can not only be overwritten at runtime for modifications/repairs, but they are also regularly swapped, replaced during resizing, and even abandoned when degrading to one side due to backing device issues. So, accessing them requires mutual exclusion using the reader/writer semaphore "nilfs->ns_sem". Some sysfs attribute show methods read this superblock buffer without the necessary mutual exclusion, which can cause problems with pointer dereferencing and memory access, so fix it.

CVSS metrics

4 scores · 4 sources · 1 version

EPSS trend

Probability

0.24%

Chance of exploitation in the next 30 days

Percentile

15%

Versus all other CVEs

30-day change

No change 0.00 pp

From 0.24% on 04-10-2026

04-10-202603-11-2026

Known exploited

Compare KEV catalogs
CISA KEV

Not in the CISA KEV catalog.

ENISA CNW

Not in the ENISA CNW catalog.

CIRCL

Not in the CIRCL catalog.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

No weakness data has been published for this record.

Affected systems

Version check

Known conditions: local access, low-privilege account, no user interaction (CVSS vector). Other conditions: not stated in public data.

Ubuntu129 products
  • linux< 4.4.0-268.302 | < 4.15.0-237.249 | < 5.4.0-200.220 | < 5.15.0-125.135 | < 6.8.0-50.51
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-aws< 4.4.0-1143.149 | < 4.4.0-1181.196 | < 4.15.0-1180.193 | < 5.4.0-1135.145 | < 5.15.0-1072.78 | < 6.8.0-1020.22
  • linux-aws-5.0All versions (No fix recorded)
  • linux-aws-5.11All versions (No fix recorded)
Linux2 products
  • linux≥ da7141fb78db915680616e15677539fc8140cf53, < b90beafac05931cbfcb6b1bd4f67c1923f47040e | ≥ da7141fb78db915680616e15677539fc8140cf53, < ba97ba173f9625d5f34a986088979eae8b80d38e | ≥ da7141fb78db915680616e15677539fc8140cf53, < 157c0d94b4c40887329418c70ef4edd1a8d6b4ed | ≥ da7141fb78db915680616e15677539fc8140cf53, < b14e7260bb691d7f563f61da07d61e3c8b59a614 | ≥ da7141fb78db915680616e15677539fc8140cf53, < 19cfeba0e4b8eda51484fcf8cf7d150418e1d880 | ≥ da7141fb78db915680616e15677539fc8140cf53, < 8c6e43b3d5f109cf9c61bc188fcc8175404e924f | ≥ da7141fb78db915680616e15677539fc8140cf53, < 962562d4c70c5cdeb4e955d63ff2017c4eca1aad | ≥ da7141fb78db915680616e15677539fc8140cf53, < 683408258917541bdb294cd717c210a04381931e | 3.17
  • linux_kernel≥ 3.17, < 4.19.322 | ≥ 4.20, < 5.4.284 | ≥ 5.5, < 5.10.226 | ≥ 5.11, < 5.15.167 | ≥ 5.16, < 6.1.110 | ≥ 6.2, < 6.6.51 | ≥ 6.7, < 6.10.10 | 6.11:rc1 | 6.11:rc2 | 6.11:rc3 | 6.11:rc4 | 6.11:rc5 | 6.11:rc6
Debian1 product
  • linux< 6.1.112-1 | < 6.10.11-1

3 vendors · 132 products

References

38 links
Show all 38 references