CVE-2025-68797char: applicom: fix NULL pointer dereference in ac_ioctl
- —Not scoredno CVSS score yet
- 0.21%Exploitation in 30 daysEPSS · top 89% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
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.
Timeline
ID reserved
By Linux
- 20 days later
· 20 days later
Published
- 4 months later
· 4 months later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
No CVSS score yet: neither the CNA, CISA nor NVD has scored this CVE. NVD status: Deferred.
- EPSS (exploitation in 30 days)
- 0.21% · top 89% of all CVEs (15 Nov 2026)
The list uses the assigner's score when there is one, then CISA's, then NVD's: Not scored.
Affected products
- affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 – < 5a6240804fb7bbd4f5f6e706955248a6f4c1abbc
- affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 – < d1b0452280029d05a98c75631131ee61c0b0d084
- affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 – < 0b8b353e09888bccee405e0dd6feafb60360f478
- affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 – < d285517429a75423789e6408653e57b6fdfc8e54
- affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 – < 74883565c621eec6cd2e35fe6d27454cf2810c23
- affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 – < f83e3e9f89181b42f6076a115d767a7552c4a39e
- affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 – < 82d12088c297fa1cef670e1718b3d24f414c23f7
- affected 2.6.12
- unaffected < 2.6.12
- unaffected 5.10.248 – ≤ 5.10.*
- unaffected 5.15.198 – ≤ 5.15.*
- unaffected 6.1.160 – ≤ 6.1.*
- unaffected 6.6.120 – ≤ 6.6.*
- unaffected 6.12.64 – ≤ 6.12.*
- unaffected 6.18.3 – ≤ 6.18.*
- unaffected 6.19 – ≤ *
References
References7
- https://git.kernel.org/stable/c/5a6240804fb7bbd4f5f6e706955248a6f4c1abbc (opens in a new tab)
- https://git.kernel.org/stable/c/d1b0452280029d05a98c75631131ee61c0b0d084 (opens in a new tab)
- https://git.kernel.org/stable/c/0b8b353e09888bccee405e0dd6feafb60360f478 (opens in a new tab)
- https://git.kernel.org/stable/c/d285517429a75423789e6408653e57b6fdfc8e54 (opens in a new tab)
- https://git.kernel.org/stable/c/74883565c621eec6cd2e35fe6d27454cf2810c23 (opens in a new tab)
- https://git.kernel.org/stable/c/f83e3e9f89181b42f6076a115d767a7552c4a39e (opens in a new tab)
- https://git.kernel.org/stable/c/82d12088c297fa1cef670e1718b3d24f414c23f7 (opens in a new tab)
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2026-2287 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2025-68797)Record last updated .