Not yet scoredPublished Jan 13, 2026

CVE-2025-68797char: applicom: fix NULL pointer dereference in ac_ioctl

Updated under an hour ago (Oct 26, 2026, 5:23 PM ET)

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Exploited in the last 30 days

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: Not yet scored
Weakness (CWE): Not given
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: Linux
NVD analysis: Deferred
Record last updated: May 11, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

Linux Linux linux:linux (from the name)	from 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before 5a6240804fb7bbd4f5f6e706955248a6f4c1abbc; from 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before d1b0452280029d05a98c75631131ee61c0b0d084; 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 builds before 0b8b353e09888bccee405e0dd6feafb60360f478; from 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before d285517429a75423789e6408653e57b6fdfc8e54; from 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before 74883565c621eec6cd2e35fe6d27454cf2810c23; from 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before f83e3e9f89181b42f6076a115d767a7552c4a39e; from 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before 82d12088c297fa1cef670e1718b3d24f414c23f7	CNA record

References

References

https://git.kernel.org/stable/c/5a6240804fb7bbd4f5f6e706955248a6f4c1abbc
https://git.kernel.org/stable/c/d1b0452280029d05a98c75631131ee61c0b0d084
https://git.kernel.org/stable/c/0b8b353e09888bccee405e0dd6feafb60360f478
https://git.kernel.org/stable/c/d285517429a75423789e6408653e57b6fdfc8e54
https://git.kernel.org/stable/c/74883565c621eec6cd2e35fe6d27454cf2810c23
https://git.kernel.org/stable/c/f83e3e9f89181b42f6076a115d767a7552c4a39e
https://git.kernel.org/stable/c/82d12088c297fa1cef670e1718b3d24f414c23f7

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.