Linux Kernel up to 6.1.77/6.6.16/6.7.4 dpu_encoder_helper_phys_cleanup null pointer dereference
CVSS Meta Temp Score | Current Exploit Price (≈) | CTI Interest Score |
---|---|---|
5.5 | $0-$5k | 0.00 |
A vulnerability was found in Linux Kernel up to 6.1.77/6.6.16/6.7.4. It has been declared as critical. This vulnerability affects the function dpu_encoder_helper_phys_cleanup
. The manipulation with an unknown input leads to a null pointer dereference vulnerability. The CWE definition for the vulnerability is CWE-476. A NULL pointer dereference occurs when the application dereferences a pointer that it expects to be valid, but is NULL, typically causing a crash or exit. As an impact it is known to affect availability. CVE summarizes:
In the Linux kernel, the following vulnerability has been resolved: drm/msm/dpu: check for valid hw_pp in dpu_encoder_helper_phys_cleanup The commit 8b45a26f2ba9 ("drm/msm/dpu: reserve cdm blocks for writeback in case of YUV output") introduced a smatch warning about another conditional block in dpu_encoder_helper_phys_cleanup() which had assumed hw_pp will always be valid which may not necessarily be true. Lets fix the other conditional block by making sure hw_pp is valid before dereferencing it. Patchwork: https://patchwork.freedesktop.org/patch/574878/
The advisory is available at git.kernel.org. This vulnerability was named CVE-2024-26667 since 02/19/2024. Technical details are known, but there is no available exploit. The structure of the vulnerability defines a possible price range of USD $0-$5k at the moment (estimation calculated on 04/02/2024).
Upgrading to version 6.1.78, 6.6.17, 6.7.5 or 6.8 eliminates this vulnerability. Applying the patch fb8bfc6ea3cd/79592a6e7bdc/eb4f56f3ff57/7f3d03c48b1e is able to eliminate this problem. The bugfix is ready for download at git.kernel.org. The best possible mitigation is suggested to be upgrading to the latest version.
The entries VDB-265868, VDB-265869, VDB-265870 and VDB-265871 are pretty similar.
Product
Type
Vendor
Name
Version
- 6.1.0
- 6.1.1
- 6.1.2
- 6.1.3
- 6.1.4
- 6.1.5
- 6.1.6
- 6.1.7
- 6.1.8
- 6.1.9
- 6.1.10
- 6.1.11
- 6.1.12
- 6.1.13
- 6.1.14
- 6.1.15
- 6.1.16
- 6.1.17
- 6.1.18
- 6.1.19
- 6.1.20
- 6.1.21
- 6.1.22
- 6.1.23
- 6.1.24
- 6.1.25
- 6.1.26
- 6.1.27
- 6.1.28
- 6.1.29
- 6.1.30
- 6.1.31
- 6.1.32
- 6.1.33
- 6.1.34
- 6.1.35
- 6.1.36
- 6.1.37
- 6.1.38
- 6.1.39
- 6.1.40
- 6.1.41
- 6.1.42
- 6.1.43
- 6.1.44
- 6.1.45
- 6.1.46
- 6.1.47
- 6.1.48
- 6.1.49
- 6.1.50
- 6.1.51
- 6.1.52
- 6.1.53
- 6.1.54
- 6.1.55
- 6.1.56
- 6.1.57
- 6.1.58
- 6.1.59
- 6.1.60
- 6.1.61
- 6.1.62
- 6.1.63
- 6.1.64
- 6.1.65
- 6.1.66
- 6.1.67
- 6.1.68
- 6.1.69
- 6.1.70
- 6.1.71
- 6.1.72
- 6.1.73
- 6.1.74
- 6.1.75
- 6.1.76
- 6.1.77
- 6.6.0
- 6.6.1
- 6.6.2
- 6.6.3
- 6.6.4
- 6.6.5
- 6.6.6
- 6.6.7
- 6.6.8
- 6.6.9
- 6.6.10
- 6.6.11
- 6.6.12
- 6.6.13
- 6.6.14
- 6.6.15
- 6.6.16
- 6.7.0
- 6.7.1
- 6.7.2
- 6.7.3
- 6.7.4
License
CPE 2.3
CPE 2.2
CVSSv4
VulDB CVSS-B Score: 🔒VulDB CVSS-BT Score: 🔒
VulDB Vector: 🔒
VulDB Reliability: 🔍
CVSSv3
VulDB Meta Base Score: 5.7VulDB Meta Temp Score: 5.5
VulDB Base Score: 5.7
VulDB Temp Score: 5.5
VulDB Vector: 🔒
VulDB Reliability: 🔍
CVSSv2
AV | AC | Au | C | I | A |
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💳 | 💳 | 💳 | 💳 | 💳 | 💳 |
💳 | 💳 | 💳 | 💳 | 💳 | 💳 |
💳 | 💳 | 💳 | 💳 | 💳 | 💳 |
Vector | Complexity | Authentication | Confidentiality | Integrity | Availability |
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unlock | unlock | unlock | unlock | unlock | unlock |
unlock | unlock | unlock | unlock | unlock | unlock |
unlock | unlock | unlock | unlock | unlock | unlock |
VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍
Exploiting
Class: Null pointer dereferenceCWE: CWE-476 / CWE-404
CAPEC: 🔒
ATT&CK: 🔒
Local: No
Remote: Partially
Availability: 🔒
Status: Not defined
EPSS Score: 🔒
EPSS Percentile: 🔒
Price Prediction: 🔍
Current Price Estimation: 🔒
0-Day | unlock | unlock | unlock | unlock |
---|---|---|---|---|
Today | unlock | unlock | unlock | unlock |
Threat Intelligence
Interest: 🔍Active Actors: 🔍
Active APT Groups: 🔍
Countermeasures
Recommended: UpgradeStatus: 🔍
0-Day Time: 🔒
Upgrade: Kernel 6.1.78/6.6.17/6.7.5/6.8
Patch: fb8bfc6ea3cd/79592a6e7bdc/eb4f56f3ff57/7f3d03c48b1e
Timeline
02/19/2024 CVE reserved04/02/2024 Advisory disclosed
04/02/2024 VulDB entry created
04/02/2024 VulDB entry last update
Sources
Vendor: kernel.orgAdvisory: git.kernel.org
Status: Confirmed
CVE: CVE-2024-26667 (🔒)
See also: 🔒
Entry
Created: 04/02/2024 10:08Changes: 04/02/2024 10:08 (57)
Complete: 🔍
Cache ID: 18:0C1:103
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