7.8

CVE-2026-74595: linux

CVSS: 7.8v3.1HighReceived
AliasesUBUNTU-CVE-2026-74595DEBIAN-CVE-2026-74595
Published 22-08-2026Last modified 16-10-2026
Open JSON

Vulnerability summary

CVE-2026-74595 is a high (CVSS 7.8) vulnerability in linux. EPSS estimates a 0.09% chance of exploitation in the next 30 days, higher than 0.4% of scored vulnerabilities.

Overall risk
31/100
0100
Medium · default modelHow is this calculated?
CVSS score
7.8/10
010
High · v3.1 (CVE.org)
EPSS score
0.09%
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 5 · Related 4
MGASA-2026-0506OPENSUSE-SU-2026:22091-1SUSE-SU-2026:4640-1SUSE-SU-2026:4706-1USN-8886-1

Timeline

  1. 22-08-2026
    PublishedVulnerability first disclosed.
  2. 16-10-2026
    Last modifiedVulnerability information updated.

Description

In the Linux kernel, the following vulnerability has been resolved: fscrypt: use the mount idmap for the owner check in fscrypt_ioctl_set_policy() fscrypt_ioctl_set_policy() calls inode_owner_or_capable() with &nop_mnt_idmap before allowing an encryption policy to be set, instead of the idmap of the mount the ioctl was issued on. fscrypt is used by filesystems that support idmapped mounts (e.g. ext4, f2fs), so on such a mount this compares the caller's fsuid against the unmapped on-disk owner rather than the mapped owner: the actual owner can be wrongly denied with -EACCES and an unrelated caller wrongly allowed. Use file_mnt_idmap(filp) instead.

CVSS metrics

4 scores · 4 sources · 1 version

EPSS trend

Probability

0.09%

Chance of exploitation in the next 30 days

Percentile

0%

Versus all other CVEs

30-day change

0.00 pp

From 0.09% on 20-09-2026

20-09-202620-10-2026
EPSS score
0.09%

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

No weakness data has been published for this record.

Affected systems

Ubuntu157 products
  • linuxAll versions (No fix recorded)
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-awsAll versions (No fix recorded)
  • linux-aws-5.0All versions (No fix recorded)
  • linux-aws-5.11All versions (No fix recorded)
Debian2 products
  • linux< 6.1.187-1 | < 6.12.105-1 | < 7.1.9-1
  • linux-6.12< 6.12.107-1~deb12u1
Linux1 product
  • linux≥ 14f3db5542e62bcf6fe088a09760ac52d55306c5, < 174633a468817a49bd474bcfc9067c84e54efe68 | ≥ 14f3db5542e62bcf6fe088a09760ac52d55306c5, < 0baeb730044981f5ec5fb7d62a3763835ea606f6 | ≥ 14f3db5542e62bcf6fe088a09760ac52d55306c5, < 33b7e810ce09955aa02f3b632455cf5e7ac990a9 | ≥ 14f3db5542e62bcf6fe088a09760ac52d55306c5, < 6a67c460b12315033268dce597546984fe5739e7 | ≥ 14f3db5542e62bcf6fe088a09760ac52d55306c5, < 653e888a24c87b8bbeab44d7e558a1c1a3641088 | ≥ 14f3db5542e62bcf6fe088a09760ac52d55306c5, < 98516ba8b817f34e86bdd7a5b7a383cff75c3ddf | ≥ 14f3db5542e62bcf6fe088a09760ac52d55306c5, < cf6c993c0feca7984797e634deba3c80342e199a | 5.12

3 vendors · 160 products

References

12 links
Show all 12 references