CVE-2026-46240: media: iris: Fix use-after-free in iris_release_internal_buffers()

Severity: high (CVSS 7.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.1% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-05-28 · updated 2026-06-17
Weakness: CWE-416

Description

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.

Affected products

Linux kernel: from 6.18.16 before 6.18.32; from 6.19.6 before 7.0.9; 7.1-rc1, 7.1-rc2 — fixed in 6.18.32, 7.0.9

How to fix

Upgrade to a fixed version: Linux kernel 6.18.32, 7.0.9. Check the vendor advisory for mitigations.

References

Get alerted when CVE-2026-46240 or the next vulnerability affects your stack