CVE-2024-39498

drm/mst: Fix NULL pointer dereference at drm_dp_add_payload_part2

MEDIUM
5.5
CVSS Score
Published: July 12, 2024 at 12:20 PM UTC
Updated: June 17, 2026 at 07:42 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/mst: Fix NULL pointer dereference at drm_dp_add_payload_part2 [Why] Commit: - commit 5aa1dfcdf0a4 ("drm/mst: Refactor the flow for payload allocation/removement") accidently overwrite the commit - commit 54d217406afe ("drm: use mgr->dev in drm_dbg_kms in drm_dp_add_payload_part2") which cause regression. [How] Recover the original NULL fix and remove the unnecessary input parameter 'state' for drm_dp_add_payload_part2(). (cherry picked from commit 4545614c1d8da603e57b60dd66224d81b6ffc305)

Affected

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

6.7 ≤ v < 6.106.7 ≤ v < 6.9.65aa1dfcdf0a429e4941e2eef75b006a8c7a8ac496.7
Vendor states this is fixed in 5a507b7d2be15fddb95bf8dee01110b723e2bcd9 (fixed)
Vendor states this is fixed in 8e21de5f99b2368a5155037ce0aae8aaba3f5241 (fixed)
Vendor states this is fixed in 6.10 (unaffected)
Vendor states this is fixed in 6.7 (unaffected)
Vendor states this is fixed in 6.9.6 (unaffected)

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

References (2)

Patch
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/5a507b7d2be15fddb95bf8dee01110b723e2bcd9
Patch
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/8e21de5f99b2368a5155037ce0aae8aaba3f5241

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

StatusMODIFIED
CWE
CWE-476

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