In the Linux kernel, the following vulnerability has been resolved: drm/omap: dsi: Do not copy isr table To be able to unregister stuff from isrs,… (CVE-2026-90316)
A use-after-free (UAF) vulnerability in the Linux kernel's drm/omap DSI driver was resolved by changing how the ISR table is handled. The vulnerability arises because the ISR table was copied to allow unregistering interrupts, but this approach risks UAF on stack-allocated objects if interrupts are unregistered while being handled. The fix avoids copying the ISR table to prevent this issue.
AI Analysis
Technical Summary
The Linux kernel's drm/omap DSI driver previously copied the ISR (interrupt service routine) table to enable unregistering interrupts. However, this copying did not reflect actual usage since unregistering via this method was not performed. The copied table included stack-allocated objects passed to ISRs, which could lead to use-after-free vulnerabilities if interrupts were unregistered during their handling. The vulnerability was addressed by no longer copying the ISR table, thereby preventing potential UAF conditions.
Potential Impact
Successful exploitation could lead to use-after-free conditions, potentially allowing an attacker with local privileges to cause memory corruption with high impact on confidentiality, integrity, and availability as indicated by the CVSS score of 7.8. This could result in privilege escalation or system instability.
Mitigation Recommendations
A fix has been implemented in the Linux kernel to address this vulnerability by changing the handling of the ISR table in the drm/omap DSI driver. Users should update to the fixed kernel version once available. No additional mitigation steps are indicated.
In the Linux kernel, the following vulnerability has been resolved: drm/omap: dsi: Do not copy isr table To be able to unregister stuff from isrs,… (CVE-2026-90316)
Description
A use-after-free (UAF) vulnerability in the Linux kernel's drm/omap DSI driver was resolved by changing how the ISR table is handled. The vulnerability arises because the ISR table was copied to allow unregistering interrupts, but this approach risks UAF on stack-allocated objects if interrupts are unregistered while being handled. The fix avoids copying the ISR table to prevent this issue.
CVSS v3.1
Score 7.8high
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The Linux kernel's drm/omap DSI driver previously copied the ISR (interrupt service routine) table to enable unregistering interrupts. However, this copying did not reflect actual usage since unregistering via this method was not performed. The copied table included stack-allocated objects passed to ISRs, which could lead to use-after-free vulnerabilities if interrupts were unregistered during their handling. The vulnerability was addressed by no longer copying the ISR table, thereby preventing potential UAF conditions.
Potential Impact
Successful exploitation could lead to use-after-free conditions, potentially allowing an attacker with local privileges to cause memory corruption with high impact on confidentiality, integrity, and availability as indicated by the CVSS score of 7.8. This could result in privilege escalation or system instability.
Mitigation Recommendations
A fix has been implemented in the Linux kernel to address this vulnerability by changing the handling of the ISR table in the drm/omap DSI driver. Users should update to the fixed kernel version once available. No additional mitigation steps are indicated.
Technical Details
- Gcve Source
- db.gcve.eu
- Osv Id
- GHSA-gxgq-hfgr-pjxw
- Osv Schema Version
- 1.4.0
- Aliases
- ["CVE-2026-90316"]
- Database Specific Severity
- HIGH
- Cvss Version
- 3.1
Threat ID: 6aade51f55bf5e2cf5edc171
Added to database: 09/19/2026, 01:27:59 UTC
Last enriched: 09/19/2026, 01:49:01 UTC
Last updated: 09/19/2026, 01:49:01 UTC
Views: 2
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