CVE-2024-26876

drm/bridge: adv7511: fix crash on irq during probe

MEDIUM
5.5
CVSS Score
Published: April 17, 2024 at 10:27 AM UTC
Updated: June 17, 2026 at 07:18 AM UTC
1 product affected across 1 vendorLinux Kernel

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Severity
MEDIUM5.5
Exploit prediction
EPSS 0.2%
SSVC
No known exploit

Description

In the Linux kernel, the following vulnerability has been resolved: drm/bridge: adv7511: fix crash on irq during probe Moved IRQ registration down to end of adv7511_probe(). If an IRQ already is pending during adv7511_probe (before adv7511_cec_init) then cec_received_msg_ts could crash using uninitialized data: Unable to handle kernel read from unreadable memory at virtual address 00000000000003d5 Internal error: Oops: 96000004 [#1] PREEMPT_RT SMP Call trace: cec_received_msg_ts+0x48/0x990 [cec] adv7511_cec_irq_process+0x1cc/0x308 [adv7511] adv7511_irq_process+0xd8/0x120 [adv7511] adv7511_irq_handler+0x1c/0x30 [adv7511] irq_thread_fn+0x30/0xa0 irq_thread+0x14c/0x238 kthread+0x190/0x1a8

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

4.15 ≤ v < 6.6.554.15 ≤ v < 6.7.114.15 ≤ v < 6.8.24.15 ≤ v < 6.96.7 ≤ v < 6.7.116.8 ≤ v < 6.8.23b1b975003e4a3da4b93ab032487a3ae4afca7b54.15
Vendor states this is fixed in 28a94271bd50e4cf498df0381f776f8ea40a289e (fixed)
Vendor states this is fixed in 50f4b57e9a9db4ede9294f39b9e75b5f26bae9b7 (fixed)
Vendor states this is fixed in 955c1252930677762e0db2b6b9e36938c887445c (fixed)
Vendor states this is fixed in aeedaee5ef5468caf59e2bb1265c2116e0c9a924 (fixed)
Vendor states this is fixed in 4.15 (unaffected)
Vendor states this is fixed in 6.6.55 (unaffected)
Vendor states this is fixed in 6.7.11 (unaffected)
Vendor states this is fixed in 6.8.2 (unaffected)
Vendor states this is fixed in 6.9 (unaffected)

References (4)

Mailing ListPatch
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/28a94271bd50e4cf498df0381f776f8ea40a289e
Mailing ListPatch
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/50f4b57e9a9db4ede9294f39b9e75b5f26bae9b7
Mailing ListPatch
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/955c1252930677762e0db2b6b9e36938c887445c
Mailing ListPatch
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/aeedaee5ef5468caf59e2bb1265c2116e0c9a924

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

Attack Vector
LOCAL
Complexity
LOW
Privileges
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Vector?

Quick Info

StatusANALYZED
CWE
CWE-908

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