drm/amd/display: Fix a NULL pointer dereference in amdgpu_dm_connector_add_common_modes()
- 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- Where the record stands: published, rejected by its publisher, or superseded by another id.What do these mean?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
- 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/amd/display: Fix a NULL pointer dereference in amdgpu_dm_connector_add_common_modes() In amdgpu_dm_connector_add_common_modes(), amdgpu_dm_create_common_mode() is assigned to mode and is passed to drm_mode_probed_add() directly after that. drm_mode_probed_add() passes &mode->head to list_add_tail(), and there is a dereference of it in list_add_tail() without recoveries, which could lead to NULL pointer dereference on failure of amdgpu_dm_create_common_mode(). Fix this by adding a NULL check of mode. This bug was found by a static analyzer. Builds with 'make allyesconfig' show no new warnings, and our static analyzer no longer warns about this code.
Timeline
- CVE published
- CISA SSVC assessment
Exploitation: none · Automatable: no · Technical impact: partial
- Record last updated
Affected versions
- Linux Linux
Version range not reported
- Linux Linux
4.15
References 7
git.kernel.org
- stable/c/2c729dec8c1e3e2892fde5ce8181553860914e74
- stable/c/57f4ad5e286fe4599c8fc63cf89f85f9eec7f9c9
- stable/c/19a7eba284790cfbba2945deb2363cf03ce41648
- stable/c/bdc7429708a0772d90c208975694f7c2133b1202
- stable/c/f4eaa999fec78dec2a9c2d797438e05cbffb125b
- stable/c/639b3b9def0a6a3f316a195d705d14113236e89c
- stable/c/588a70177df3b1777484267584ef38ab2ca899a2