CVE-2024-26721
Last modified
CVE-2024-26721 is a medium-severity vulnerability rated 5.5/10 on the CVSS scale. In the Linux kernel, the following vulnerability has been resolved: drm/i915/dsc: Fix the macro that calculates DSCC_/DSCA_ PPS reg address Commit bd077259d0a9 ("drm/i915/vdsc: Add function to read any PPS register") defines a new macro to calculate the DSC PPS register addresses with PPS number as an input. This macro correctly calculates the addresses till PPS 11 since the addresses increment by 4. EPSS estimates a 0.20% chance of exploitation in the next 30 days.
Description
In the Linux kernel, the following vulnerability has been resolved: drm/i915/dsc: Fix the macro that calculates DSCC_/DSCA_ PPS reg address Commit bd077259d0a9 ("drm/i915/vdsc: Add function to read any PPS register") defines a new macro to calculate the DSC PPS register addresses with PPS number as an input. This macro correctly calculates the addresses till PPS 11 since the addresses increment by 4. So in that case the following macro works correctly to give correct register address: _MMIO(_DSCA_PPS_0 + (pps) * 4) However after PPS 11, the register address for PPS 12 increments by 12 because of RC Buffer memory allocation in between. Because of this discontinuity in the address space, the macro calculates wrong addresses for PPS 12 - 16 resulting into incorrect DSC PPS parameter value read/writes causing DSC corruption. This fixes it by correcting this macro to add the offset of 12 for PPS >=12. v3: Add correct paranthesis for pps argument (Jani Nikula) (cherry picked from commit 6074be620c31dc2ae11af96a1a5ea95580976fb5)
Metrics
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions | Update |
|---|---|---|---|
| Linux | Linux Kernel | >= 6.7, < 6.7.6 | — |
| Linux | Linux Kernel | 6.8 | Rc1 |
References
Timeline
- Published
- Last Modified
- Status
- Analyzed
Frequently Asked Questions
What is CVE-2024-26721?
How severe is CVE-2024-26721?
How do I fix CVE-2024-26721?
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
Related CVEs from 2024
- CVE-2024-26716In the Linux kernel, the following vulnerability has been re…5.5
- CVE-2024-26717In the Linux kernel, the following vulnerability has been re…5.5
- CVE-2024-26718In the Linux kernel, the following vulnerability has been re…5.5
- CVE-2024-26719In the Linux kernel, the following vulnerability has been re…5.5
- CVE-2024-2672A vulnerability was found in Campcodes Online Job Finder Sys…6.5
- CVE-2024-26720Rejected reason: This CVE ID has been rejected or withdrawn …
- CVE-2024-26722In the Linux kernel, the following vulnerability has been re…5.5
- CVE-2024-26723In the Linux kernel, the following vulnerability has been re…7.8
- CVE-2024-26724In the Linux kernel, the following vulnerability has been re…7.8
- CVE-2024-26725In the Linux kernel, the following vulnerability has been re…5.5
- CVE-2024-26726In the Linux kernel, the following vulnerability has been re…5.5
- CVE-2024-26727In the Linux kernel, the following vulnerability has been re…5.5
Are you affected by CVE-2024-26721?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST
