media: iris: Fix use-after-free in iris_release_internal_buffers()
Key facts
- Attack vector
- Local
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Code execution
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- Fixed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-416 and the CVSS impact.
Summary
In the Linux kernel, the following vulnerability has been resolved: media: iris: Fix use-after-free in iris_release_internal_buffers() The recent change in commit 1dabf00ee206 ("media: iris: gen1: Destroy internal buffers after FW releases") introduced a regression where session_release_buf() may free the buffer. The caller, iris_release_internal_buffers(), continued to access `buffer` after the call, leading to a potential use-after-free. Fix this by setting BUF_ATTR_PENDING_RELEASE before calling session_release_buf(), and reverting the flag if the call fails. This ensures no dereference occurs after potential freeing.
Why it matters now
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Linux | Linux | 6.18.16 to before 6.18.32; 6.19.6 to before 6.20 | 6.18.32, 6.20 | Patch available | CNA |
| Linux | Linux | 7.0 and later | 6.18.32, 7.0.9, 7.1 | Patch available | CNA |
Remediation
- Fix · CNA Linux (Linux) Fixed in 6.18.32, 6.20
- Fix · CNA Linux (Linux) Fixed in 6.18.32, 7.0.9, 7.1
Vendor assessments
Red Hat
Red Hat rating: Moderate. Red Hat's page for this CVE →
Not affected: 5 products
- Red Hat Enterprise Linux 10
- Red Hat Enterprise Linux 6
- Red Hat Enterprise Linux 7
- Red Hat Enterprise Linux 8
- Red Hat Enterprise Linux 9
Timeline
- 2026-10-02 Threatist record created from CVE-2026-46240
- 2026-10-03 Alias added: GHSA-h697-4wx8-5625
- 2026-10-20 Affected versions changed · Red Hat
References
More Linux Kernel vulnerabilities
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- TI-2021-05514 Heap Out-Of-Bounds Write in Netfilter IP6T_SO_SET_REPLACE KEVCVSS 3.1HIGH 8.3
Sources
- CVE-2026-46240 · CVE Program
- CVE-2026-46240 · NVD
- FIRST EPSS
- GHSA-h697-4wx8-5625 · GitHub Advisory Database · CC BY 4.0
- CVE-2026-46240 · Red Hat security data · CC BY 4.0
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