drm/amdkfd: clamp v9 CRIU control stack checkpoint copy to BO size
- 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- Where the record stands: published, rejected by its publisher, or superseded by another id.What do these mean?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, 7.1.6
- 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
- Exploitation: none
- Automatable: no
- Technical impact: partial
Summary
In the Linux kernel, the following vulnerability has been resolved: drm/amdkfd: clamp v9 CRIU control stack checkpoint copy to BO size CRIU checkpoint copies the MQD control stack using cp_hqd_cntl_stack_size from hardware without bounding it to the allocated BO region. If the HW field is larger than the queue's control stack allocation, memcpy reads past the BO into adjacent GTT memory and can leak kernel data to userspace. Store the page-aligned control stack BO size in mqd_manager and clamp checkpoint copies and reported checkpoint sizes to min(cp_hqd_cntl_stack_size, mm->ctl_stack_size). Apply the same bound for multi-XCC v9.4.3 checkpoint layout. (cherry picked from commit 6c2abd0ec09e86c6323010673766f76050e28aa3)
Timeline
- CVE published
- CISA SSVC assessment
Exploitation: none · Automatable: no · Technical impact: partial
- Record last updated
Affected versions
- Linux Linux
From 3a9822d7bd623be9000cef8101ecf8479fa53f2c · fixed in 1218c6dcec80f886372635e82f3229d5babc37d3; From 3a9822d7bd623be9000cef8101ecf8479fa53f2c · fixed in a0d87beb2660a5098b2b0ecdc1e96810a9074ea9; From 3a9822d7bd623be9000cef8101ecf8479fa53f2c · fixed in 426ffae6ecc7ec77d32bf8be065c21a1b881b084
- Linux Linux
5.18
- KernelLinux
From 5.18.0 · fixed in 6.12.114; From 6.13.0 · fixed in 7.1.6