Answer in brief
CVE-2026-64546 records a High severity (CVSS 7.1) vulnerability in drm/edid: fix OOB read in drm_parse_tiled_block(). The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
CVSS is 7.1. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=40d9b043a89e2301e1f97ade055a73ecc28e9afe <c4ab04ca1bbf87eefa9fec5c80e1880450d2e7c0 || >=40d9b043a89e2301e1f97ade055a73ecc28e9afe <9acd5c1ddc17ca4c5ffa0c373e3fdf480506e061 || >=40d9b043a89e2301e1f97ade055a73ecc28e9afe <157727131ce8a52d8d9bc676c372ef82db6436c4 || >=40d9b043a89e2301e1f97ade055a73ecc28e9afe <bfa05d89dc3ca3fb1a9099ef5185549a5ec8490d || >=40d9b043a89e2301e1f97ade055a73ecc28e9afe <4f5484d25f85ad6c989bad5f6a43450cecfcfd28 || >=40d9b043a89e2301e1f97ade055a73ecc28e9afe <9cc0f8e63e8c34cf43def35cbd305ba711181a1f || >=40d9b043a89e2301e1f97ade055a73ecc28e9afe <4137e1ecec9c8cb6c4fcee28ffabbbc7409eb7fb || >=40d9b043a89e2301e1f97ade055a73ecc28e9afe <faaa1e1155833e7d4ce7e3cfaf64c0d636b190db | c4ab04ca1bbf87eefa9fec5c80e1880450d2e7c0, 9acd5c1ddc17ca4c5ffa0c373e3fdf480506e061, 157727131ce8a52d8d9bc676c372ef82db6436c4, bfa05d89dc3ca3fb1a9099ef5185549a5ec8490d, 4f5484d25f85ad6c989bad5f6a43450cecfcfd28, 9cc0f8e63e8c34cf43def35cbd305ba711181a1f, 4137e1ecec9c8cb6c4fcee28ffabbbc7409eb7fb, faaa1e1155833e7d4ce7e3cfaf64c0d636b190db |
| Linux/Linuxgeneric | 3.19 | Not reported |
Published upstream
Jul 27, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Aug 17, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Aug 5, 2026
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)
Quoted source text, attributed separately from HOL analysis.