drm/i915: clear CRTC color blob pointers after dropping refs
- 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- Where the record stands: published, rejected by its publisher, or superseded by another id.What do these mean?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 6.12.97, 6.18.40, 6.20, 7.1.5
- 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: total
Summary
In the Linux kernel, the following vulnerability has been resolved: drm/i915: clear CRTC color blob pointers after dropping refs intel_crtc_put_color_blobs() drops the CRTC color blob references, but leaves the corresponding pointers unchanged. This can matter in intel_crtc_prepare_cleared_state(), which frees the old CRTC hw state before calling intel_dp_tunnel_atomic_clear_stream_bw(). The latter can fail while looking up the DP tunnel group state, for example with -EDEADLK. If that happens, the function returns without completing the cleared state preparation. The failed atomic state will then be cleared by the atomic core and intel_crtc_free_hw_state() can be called again for the same state, dropping the same blob references again. Clear the blob pointers after dropping the references so repeated cleanup of the same CRTC hw state is safe. (cherry picked from commit d5005addb5f68e8a0edce249506757bdc9e3d8c8)
Timeline
- CVE published
- CISA SSVC assessment
Exploitation: none · Automatable: no · Technical impact: total
- Record last updated
Affected versions
- Linux Linux
From 9a6cbb4a5c168e94a69a0cbec572b3738205232b · fixed in 164afa1a3af8e8c91b4a6d5fd7b79a44ec70abf0; From 8581466b827fdf0300a3e2e93900ddefd8240053 · fixed in 2024940522ef451098c940ab0b82d647de5e5d9b; From 77fcf58df15edcf3f5b5421f24814fb72796def9 · fixed in ac554ad943610031a25795d6ef71316f6164c136; From 77fcf58df15edcf3f5b5421f24814fb72796def9 · fixed in 31f077088e0faae6be8377741f356dea1b94ba46; From 6.12.80 · fixed in 6.12.97; From 6.18.21 · fixed in 6.18.40; From 6.19.11 · fixed in 6.20
- Linux Linux
7.0
- KernelLinux
fixed in 6.12.97; From 6.13.0 · fixed in 6.18.40; From 6.19.0 · fixed in 7.1.5