CVE-2026-64546 is a vulnerability in Linux Kernel
Published on July 27, 2026
drm/edid: fix OOB read in drm_parse_tiled_block()
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)
Products Associated with CVE-2026-64546
Want to know whenever a new CVE is published for Linux Kernel? stack.watch will email you.
Affected Versions
Linux:- Version 40d9b043a89e2301e1f97ade055a73ecc28e9afe and below c4ab04ca1bbf87eefa9fec5c80e1880450d2e7c0 is affected.
- Version 40d9b043a89e2301e1f97ade055a73ecc28e9afe and below 9acd5c1ddc17ca4c5ffa0c373e3fdf480506e061 is affected.
- Version 40d9b043a89e2301e1f97ade055a73ecc28e9afe and below 157727131ce8a52d8d9bc676c372ef82db6436c4 is affected.
- Version 40d9b043a89e2301e1f97ade055a73ecc28e9afe and below bfa05d89dc3ca3fb1a9099ef5185549a5ec8490d is affected.
- Version 40d9b043a89e2301e1f97ade055a73ecc28e9afe and below 4f5484d25f85ad6c989bad5f6a43450cecfcfd28 is affected.
- Version 40d9b043a89e2301e1f97ade055a73ecc28e9afe and below 9cc0f8e63e8c34cf43def35cbd305ba711181a1f is affected.
- Version 40d9b043a89e2301e1f97ade055a73ecc28e9afe and below 4137e1ecec9c8cb6c4fcee28ffabbbc7409eb7fb is affected.
- Version 40d9b043a89e2301e1f97ade055a73ecc28e9afe and below faaa1e1155833e7d4ce7e3cfaf64c0d636b190db is affected.
- Version 3.19 is affected.
- Before 3.19 is unaffected.
- Version 5.10.261, <= 5.10.* is unaffected.
- Version 5.15.212, <= 5.15.* is unaffected.
- Version 6.1.178, <= 6.1.* is unaffected.
- Version 6.6.145, <= 6.6.* is unaffected.
- Version 6.12.97, <= 6.12.* is unaffected.
- Version 6.18.40, <= 6.18.* is unaffected.
- Version 7.1.5, <= 7.1.* is unaffected.
- Version 7.2-rc1, <= * is unaffected.