drm/panthor: Prevent potential UAF in group creation
- Published
- Last modified
- Where the record stands: published, rejected by its publisher, or superseded by another id.What do these mean? →
- published
- Whether CISA lists it in its Known Exploited Vulnerabilities catalog: proof that attackers are using it.What do these mean? →
- Not listed in CISA KEV
- Fix
- Fixed in 6.12.114, 6.17.13, 6.18.2
- Whether working attack code is public (Exploit-DB, Metasploit, Nuclei or GitHub). Public code makes attacks easier.What do these mean? →
- None on Exploit-DB, Metasploit or GitHub
Summary
In the Linux kernel, the following vulnerability has been resolved: drm/panthor: Prevent potential UAF in group creation This commit prevents the possibility of a use after free issue in the GROUP_CREATE ioctl function, which arose as pointer to the group is accessed in that ioctl function after storing it in the Xarray. A malicious userspace can second guess the handle of a group and try to call GROUP_DESTROY ioctl from another thread around the same time as GROUP_CREATE ioctl. To prevent the use after free exploit, this commit uses a mark on an entry of group pool Xarray which is added just before returning from the GROUP_CREATE ioctl function. The mark is checked for all ioctls that specify the group handle and so userspace won't be abe to delete a group that isn't marked yet. v2: Add R-bs and fixes tags
Timeline
- CVE published
- Record last updated
Affected versions
- Linux Linux
From de85488138247d034eb3241840424a54d660926b · fixed in c6bbec068a9accd6f1df05f3df9a5254c99292ee; From de85488138247d034eb3241840424a54d660926b · fixed in deb8b2491f6b9882ae02d7dc2651c7bf4f3b7e05; From de85488138247d034eb3241840424a54d660926b · fixed in c646ebff3fa571e7ea974235286fb9ed3edc260c; From de85488138247d034eb3241840424a54d660926b · fixed in eec7e23d848d2194dd8791fcd0f4a54d4378eecd
- Linux Linux
6.10
- KernelLinux
From 6.10.0 · fixed in 6.12.114; From 6.13.0 · fixed in 6.17.13; From 6.18.0 · fixed in 6.18.2