CVE-2026-64546drm/edid: fix OOB read in drm_parse_tiled_block()
- 7.1HighCVSS base score
- 0.13%Exploitation in 30 daysEPSS · top 97% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
Description
In the Linux kernel, the following vulnerability has been resolved: drm/edid: fix OOB read in drm_parse_tiled_block() drm_parse_tiled_block() casts the DisplayID block to a struct displayid_tiled_block and reads the full fixed layout up to tile->topology_id[7] without checking block->num_bytes. The DisplayID iterator only validates the declared payload length, so a crafted EDID can advertise a tiled-display block (tag DATA_BLOCK_TILED_DISPLAY, or DATA_BLOCK_2_TILED_DISPLAY_TOPOLOGY for v2.0) with a small num_bytes at the end of a DisplayID extension. The read then runs past the end of the exact-sized kmemdup()'d EDID allocation, a heap out-of-bounds read. Reject blocks shorter than the spec's 22-byte tiled payload before reading the fixed struct, as drm_parse_vesa_mso_data() already does. BUG: KASAN: slab-out-of-bounds in drm_edid_connector_update Read of size 2 at addr ffff888010077700 by task exploit/147 dump_stack_lvl (lib/dump_stack.c:94 ...) print_report (mm/kasan/report.c:378 ...) kasan_report (mm/kasan/report.c:595) drm_edid_connector_update (drivers/gpu/drm/drm_edid.c:7581) bochs_connector_helper_get_modes (drivers/gpu/drm/tiny/bochs.c:574) drm_helper_probe_single_connector_modes (drivers/gpu/drm/drm_probe_helper.c:426) status_store (drivers/gpu/drm/drm_sysfs.c:219) ... vfs_write (fs/read_write.c:595 fs/read_write.c:688) ksys_write (fs/read_write.c:740)
Timeline
ID reserved
By Linux
- 8 days later
· 8 days later
Published
- 3 months later
· 3 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 |
|---|---|---|---|
| LinuxCNA (assigner) | 3.1 | High7.1 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H |
| NVDNVD · Analyzed | 3.1 | High7.1 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H |
- EPSS (exploitation in 30 days)
- 0.13% · top 97% of all CVEs (13 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: High 7.1.
Affected products
- affected 40d9b043a89e2301e1f97ade055a73ecc28e9afe – < c4ab04ca1bbf87eefa9fec5c80e1880450d2e7c0
- affected 40d9b043a89e2301e1f97ade055a73ecc28e9afe – < 9acd5c1ddc17ca4c5ffa0c373e3fdf480506e061
- affected 40d9b043a89e2301e1f97ade055a73ecc28e9afe – < 157727131ce8a52d8d9bc676c372ef82db6436c4
- affected 40d9b043a89e2301e1f97ade055a73ecc28e9afe – < bfa05d89dc3ca3fb1a9099ef5185549a5ec8490d
- affected 40d9b043a89e2301e1f97ade055a73ecc28e9afe – < 4f5484d25f85ad6c989bad5f6a43450cecfcfd28
- affected 40d9b043a89e2301e1f97ade055a73ecc28e9afe – < 9cc0f8e63e8c34cf43def35cbd305ba711181a1f
- affected 40d9b043a89e2301e1f97ade055a73ecc28e9afe – < 4137e1ecec9c8cb6c4fcee28ffabbbc7409eb7fb
- affected 40d9b043a89e2301e1f97ade055a73ecc28e9afe – < faaa1e1155833e7d4ce7e3cfaf64c0d636b190db
- affected 3.19
- unaffected < 3.19
- unaffected 5.10.261 – ≤ 5.10.*
- unaffected 5.15.212 – ≤ 5.15.*
- unaffected 6.1.178 – ≤ 6.1.*
- unaffected 6.6.145 – ≤ 6.6.*
- unaffected 6.12.97 – ≤ 6.12.*
- unaffected 6.18.40 – ≤ 6.18.*
- unaffected 7.1.5 – ≤ 7.1.*
- unaffected 7.2 – ≤ *
References
References8
- https://git.kernel.org/stable/c/c4ab04ca1bbf87eefa9fec5c80e1880450d2e7c0 (opens in a new tab)
- https://git.kernel.org/stable/c/9acd5c1ddc17ca4c5ffa0c373e3fdf480506e061 (opens in a new tab)
- https://git.kernel.org/stable/c/157727131ce8a52d8d9bc676c372ef82db6436c4 (opens in a new tab)
- https://git.kernel.org/stable/c/bfa05d89dc3ca3fb1a9099ef5185549a5ec8490d (opens in a new tab)
- https://git.kernel.org/stable/c/4f5484d25f85ad6c989bad5f6a43450cecfcfd28 (opens in a new tab)
- https://git.kernel.org/stable/c/9cc0f8e63e8c34cf43def35cbd305ba711181a1f (opens in a new tab)
- https://git.kernel.org/stable/c/4137e1ecec9c8cb6c4fcee28ffabbbc7409eb7fb (opens in a new tab)
- https://git.kernel.org/stable/c/faaa1e1155833e7d4ce7e3cfaf64c0d636b190db (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)
- EUVD EUVD-2026-49597 (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://cveledger.app/cve/CVE-2026-64546)Record last updated .