9.8

CVE-2024-46695: linux Incorrect Default Permissions

CVSS: 9.8v3.1CriticalModified
AliasesUBUNTU-CVE-2024-46695DEBIAN-CVE-2024-46695
Published 13-09-2024Last modified 05-08-2026
Open JSON

Vulnerability summary

CVE-2024-46695 is a critical (CVSS 9.8) Incorrect Default Permissions vulnerability in linux. EPSS estimates a 0.53% chance of exploitation in the next 30 days, higher than 43.6% of scored vulnerabilities.

Overall risk
70/100
0100
High · default modelHow is this calculated?
CVSS score
9.8/10
010
Critical · v3.1 (CVE.org)
EPSS score
0.53%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 27 · Related 21
DLA-4008-1DLA-4075-1RHSA-2024:10939RHSA-2024:10943RHSA-2024:10944RHSA-2025:1658

Timeline

  1. 13-09-2024
    PublishedVulnerability first disclosed.
  2. 05-08-2026
    Last modifiedVulnerability information updated.

Description

In the Linux kernel, the following vulnerability has been resolved: selinux,smack: don't bypass permissions check in inode_setsecctx hook Marek Gresko reports that the root user on an NFS client is able to change the security labels on files on an NFS filesystem that is exported with root squashing enabled. The end of the kerneldoc comment for __vfs_setxattr_noperm() states: * This function requires the caller to lock the inode's i_mutex before it * is executed. It also assumes that the caller will make the appropriate * permission checks. nfsd_setattr() does do permissions checking via fh_verify() and nfsd_permission(), but those don't do all the same permissions checks that are done by security_inode_setxattr() and its related LSM hooks do. Since nfsd_setattr() is the only consumer of security_inode_setsecctx(), simplest solution appears to be to replace the call to __vfs_setxattr_noperm() with a call to __vfs_setxattr_locked(). This fixes the above issue and has the added benefit of causing nfsd to recall conflicting delegations on a file when a client tries to change its security label.

CVSS metrics

4 scores · 4 sources · 1 version

EPSS trend

Probability

0.53%

Chance of exploitation in the next 30 days

Percentile

44%

Versus all other CVEs

30-day change

0.00 pp

From 0.53% on 18-09-2026

18-09-202618-10-2026
EPSS score
0.53%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Ubuntu130 products
  • linuxAll versions (No fix recorded) | < 5.15.0-127.137 | < 6.8.0-50.51
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-awsAll versions (No fix recorded) | < 5.15.0-1073.79 | < 6.8.0-1020.22
  • linux-aws-5.0All versions (No fix recorded)
  • linux-aws-5.11All versions (No fix recorded)
Linux2 products
  • linux≥ 18032ca062e621e15683cb61c066ef3dc5414a7b, < 2dbc4b7bac60b02cc6e70d05bf6a7dfd551f9dda | ≥ 18032ca062e621e15683cb61c066ef3dc5414a7b, < fe0cd53791119f6287b6532af8ce41576d664930 | ≥ 18032ca062e621e15683cb61c066ef3dc5414a7b, < eebec98791d0137e455cc006411bb92a54250924 | ≥ 18032ca062e621e15683cb61c066ef3dc5414a7b, < 459584258d47ec3cc6245a82e8a49c9d08eb8b57 | ≥ 18032ca062e621e15683cb61c066ef3dc5414a7b, < f71ec019257ba4f7ab198bd948c5902a207bad96 | ≥ 18032ca062e621e15683cb61c066ef3dc5414a7b, < 76a0e79bc84f466999fa501fce5bf7a07641b8a7 | 3.11
  • linux_kernel< 6.6.49 | ≥ 6.7, < 6.10.8 | 6.11:rc1 | 6.11:rc2 | 6.11:rc3 | 6.11:rc4 | 6.11:rc5
Debian1 product
  • linux< 6.1.115-1 | < 6.10.9-1

3 vendors · 133 products

References

25 links
Show all 25 references