CVE-2025-68797: linux

CVSS: UnknownDeferred
AliasesUBUNTU-CVE-2025-68797DEBIAN-CVE-2025-68797
Published 13-01-2026Last modified 11-05-2026
Open JSON

Vulnerability summary

CVE-2025-68797 is a vulnerability in linux with no CVSS score yet. EPSS estimates a 0.21% chance of exploitation in the next 30 days, higher than 10.2% of scored vulnerabilities.

Overall risk
0/100
0100
Minimal · default modelHow is this calculated?
CVSS score
Not scored
010
No CVSS score recorded
EPSS score
0.21%
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 47 · Related 43
DLA-4475-1DLA-4476-1DSA-6126-1DSA-6127-1MGASA-2026-0017MGASA-2026-0018

Timeline

  1. 13-01-2026
    PublishedVulnerability first disclosed.
  2. 11-05-2026
    Last modifiedVulnerability information updated.

Description

In the Linux kernel, the following vulnerability has been resolved: char: applicom: fix NULL pointer dereference in ac_ioctl Discovered by Atuin - Automated Vulnerability Discovery Engine. In ac_ioctl, the validation of IndexCard and the check for a valid RamIO pointer are skipped when cmd is 6. However, the function unconditionally executes readb(apbs[IndexCard].RamIO + VERS) at the end. If cmd is 6, IndexCard may reference a board that does not exist (where RamIO is NULL), leading to a NULL pointer dereference. Fix this by skipping the readb access when cmd is 6, as this command is a global information query and does not target a specific board context.

CVSS metrics

Risk metrics not yet published.

EPSS trend

Probability

0.21%

Chance of exploitation in the next 30 days

Percentile

10%

Versus all other CVEs

30-day change

0.00 pp

From 0.20% on 19-09-2026

19-09-202619-10-2026
EPSS score
0.21%

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) | < 5.15.0-173.183 | < 6.8.0-110.110 | < 6.17.0-22.22
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-awsAll versions (No fix recorded) | < 5.15.0-1103.110 | < 6.8.0-1052.55 | < 6.17.0-1012.12
  • linux-aws-5.0All versions (No fix recorded)
  • linux-aws-5.11All versions (No fix recorded)
Debian1 product
  • linux< 6.1.162-1 | < 6.12.69-1 | < 6.18.3-1
Linux1 product
  • linux≥ 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, < 5a6240804fb7bbd4f5f6e706955248a6f4c1abbc | ≥ 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, < d1b0452280029d05a98c75631131ee61c0b0d084 | ≥ 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, < 0b8b353e09888bccee405e0dd6feafb60360f478 | ≥ 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, < d285517429a75423789e6408653e57b6fdfc8e54 | ≥ 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, < 74883565c621eec6cd2e35fe6d27454cf2810c23 | ≥ 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, < f83e3e9f89181b42f6076a115d767a7552c4a39e | ≥ 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, < 82d12088c297fa1cef670e1718b3d24f414c23f7 | 2.6.12

3 vendors · 159 products

References

42 links
Show all 42 references