CVE-2022-49221
drm/msm/dp: populate connector of struct dp_panel
- Published
- Updated
- Reserved
- Assigned by
- Linux
Description
In the Linux kernel, the following vulnerability has been resolved: drm/msm/dp: populate connector of struct dp_panel DP CTS test case 4.2.2.6 has valid edid with bad checksum on purpose and expect DP source return correct checksum. During drm edid read, correct edid checksum is calculated and stored at connector::real_edid_checksum. The problem is struct dp_panel::connector never be assigned, instead the connector is stored in struct msm_dp::connector. When we run compliance testing test case 4.2.2.6 dp_panel_handle_sink_request() won't have a valid edid set in struct dp_panel::edid so we'll try to use the connectors real_edid_checksum and hit a NULL pointer dereference error because the connector pointer is never assigned. Changes in V2: -- populate panel connector at msm_dp_modeset_init() instead of at dp_panel_read_sink_caps() Changes in V3: -- remove unhelpful kernel crash trace commit text -- remove renaming dp_display parameter to dp Changes in V4: -- add more details to commit text Changes in v10: -- group into one series Changes in v11: -- drop drm/msm/dp: dp_link_parse_sink_count() return immediately if aux read Signee-off-by: Kuogee Hsieh <[email protected]>
Timeline
ID reserved
By Linux
Published
- 15 months later
· 15 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
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| CISA-ADPADP (enrichment) | 3.1 | Medium5.5 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
| NVDNVD · Modified | 3.1 | Medium5.5 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
- EPSS (exploitation in 30 days)
- 0.27% · top 81% of all CVEs (7 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: no · Technical impact: partial
The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 5.5.
Weakness
Affected products
- affected f86bc4a1a401d3691bad41e67f9db0c2ea94da32 – < 413c62697b61226a236c8b1f5cd64dcf42bcc12f
- affected 7948fe12d47a946fb8025a0534c900e3dd4b5839 – < 9525b8bcae8b99188990b56484799cf4b1b43786
- affected 7948fe12d47a946fb8025a0534c900e3dd4b5839 – < fbba600f432a360b42452fee79d1fb35d3aa8aeb
- affected 7948fe12d47a946fb8025a0534c900e3dd4b5839 – < 104074ebc0c3f358dd1ee944fbcde92c6e5a21dd
- affected 7948fe12d47a946fb8025a0534c900e3dd4b5839 – < 5e602f5156910c7b19661699896cb6e3fb94fab9
- affected ab1ccd1e2584b268784518f838f7cc72faec576b
- affected 08a96864a45b65ee406a344c78dd761b2fd66887
- affected 5.10.67 – < 5.10.110
- affected 5.13.19 – < 5.14
- affected 5.14.6 – < 5.15
- affected 5.15
- unaffected < 5.15
- unaffected 5.10.110 – ≤ 5.10.*
- unaffected 5.15.33 – ≤ 5.15.*
- unaffected 5.16.19 – ≤ 5.16.*
- unaffected 5.17.2 – ≤ 5.17.*
- unaffected 5.18 – ≤ *
References (5)
- https://git.kernel.org/stable/c/413c62697b61226a236c8b1f5cd64dcf42bcc12f (opens in a new tab)
- https://git.kernel.org/stable/c/9525b8bcae8b99188990b56484799cf4b1b43786 (opens in a new tab)
- https://git.kernel.org/stable/c/fbba600f432a360b42452fee79d1fb35d3aa8aeb (opens in a new tab)
- https://git.kernel.org/stable/c/104074ebc0c3f358dd1ee944fbcde92c6e5a21dd (opens in a new tab)
- https://git.kernel.org/stable/c/5e602f5156910c7b19661699896cb6e3fb94fab9 (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)
- 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://trackcve.app/cve/CVE-2022-49221)Record last updated .