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CVE-2025-68797

UnknownEPSS 0.17%

Last modified

CVE-2025-68797 is a vulnerability of currently unknown severity. 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.. EPSS estimates a 0.17% chance of exploitation in the next 30 days.

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.

Metrics

EPSS Probability
0.17%

7.0th percentile

Probability of exploitation in the next 30 days. Learn more

Affected Software

Source: CNA advisory (CVE.org). NVD analysis pending.

VendorProductVersions
LinuxLinux>= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, < 5a6240804fb7bbd4f5f6e706955248a6f4c1abbc; >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, < d1b0452280029d05a98c75631131ee61c0b0d084; >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, < 0b8b353e09888bccee405e0dd6feafb60360f478; >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, < d285517429a75423789e6408653e57b6fdfc8e54; >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, < 74883565c621eec6cd2e35fe6d27454cf2810c23; >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, < f83e3e9f89181b42f6076a115d767a7552c4a39e; >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, < 82d12088c297fa1cef670e1718b3d24f414c23f7
LinuxLinux2.6.12

References

Timeline

Published
Last Modified
Status
Deferred

Frequently Asked Questions

What is CVE-2025-68797?
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.
How severe is CVE-2025-68797?
Severity scoring for CVE-2025-68797 is pending analysis. The EPSS model estimates a 0.17% probability of exploitation in the next 30 days.
How do I fix CVE-2025-68797?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

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Source: NVD / NIST