CVE-2025-68797

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Source
https://cve.org/CVERecord?id=CVE-2025-68797
Import Source
https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2025-68797.json
JSON Data
https://api.test.osv.dev/v1/vulns/CVE-2025-68797
Downstream
Related
Published
2026-01-13T15:29:07.575Z
Modified
2026-03-20T12:46:29.113836Z
Summary
char: applicom: fix NULL pointer dereference in ac_ioctl
Details

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.

Database specific 
{
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/68xxx/CVE-2025-68797.json"
}
References

Affected packages

Git / git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git

Affected ranges

Type
GIT
Repo
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Events
Introduced
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2
Fixed
5a6240804fb7bbd4f5f6e706955248a6f4c1abbc
Fixed
d1b0452280029d05a98c75631131ee61c0b0d084
Fixed
0b8b353e09888bccee405e0dd6feafb60360f478
Fixed
d285517429a75423789e6408653e57b6fdfc8e54
Fixed
74883565c621eec6cd2e35fe6d27454cf2810c23
Fixed
f83e3e9f89181b42f6076a115d767a7552c4a39e
Fixed
82d12088c297fa1cef670e1718b3d24f414c23f7

Database specific

source 
"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2025-68797.json"

Linux / Kernel

Package

Name
Kernel

Affected ranges

Type
ECOSYSTEM
Events
Introduced
2.6.12
Fixed
5.10.248
Type
ECOSYSTEM
Events
Introduced
5.11.0
Fixed
5.15.198
Type
ECOSYSTEM
Events
Introduced
5.16.0
Fixed
6.1.160
Type
ECOSYSTEM
Events
Introduced
6.2.0
Fixed
6.6.120
Type
ECOSYSTEM
Events
Introduced
6.7.0
Fixed
6.12.64
Type
ECOSYSTEM
Events
Introduced
6.13.0
Fixed
6.18.3

Database specific

source 
"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2025-68797.json"