Description (CNA)
In the Linux kernel, the following vulnerability has been resolved: media: amphion: Fix race between m2m job_abort and device_run Fix kernel panic caused by race condition where v4l2_m2m_ctx_release() frees m2m_ctx while v4l2_m2m_try_run() is about to call device_run with the same context. Race sequence: v4l2_m2m_try_run(): v4l2_m2m_ctx_release(): lock/unlock v4l2_m2m_cancel_job() job_abort() v4l2_m2m_job_finish() kfree(m2m_ctx) <- frees ctx device_run() <- use-after-free crash at 0x538 Crash trace: Unable to handle kernel read from unreadable memory at virtual address 0000000000000538 v4l2_m2m_try_run+0x78/0x138 v4l2_m2m_device_run_work+0x14/0x20 The amphion vpu driver does not rely on the m2m framework's device_run callback to perform encode/decode operations. Fix the race by preventing m2m framework job scheduling entirely: - Add job_ready callback returning 0 (no jobs ready for m2m framework) - Remove job_abort callback to avoid the race condition
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected 3cd084519c6f91cbef9d604bcf26844fa81d4922 before 516467052fdfc6a13eadc70d43420ae57436bf3c; affected 3cd084519c6f91cbef9d604bcf26844fa81d4922 before 42dc622776f3ce1a6c31b13bdc686f7295e3b323; affected 3cd084519c6f91cbef9d604bcf26844fa81d4922 before da4f46c5cf1d26e6b09418ad453e152f2e75a02c; affected 3cd084519c6f91cbef9d604bcf26844fa81d4922 before fdc150dac1adb9a98be9d6956cff0348838b024a; affected 3cd084519c6f91cbef9d604bcf26844fa81d4922 before 6be2cb75bc1300080cfc8051579f22efae9401f7; affected 3cd084519c6f91cbef9d604bcf26844fa81d4922 before 8cd35ceadcfc8c5da2eb7f7ce24525ce9d4ee62e |
| Linux / Linux | affected 5.18; unaffected 0 before 5.18; unaffected 6.1.175 through 6.1.*; unaffected 6.6.140 through 6.6.*; unaffected 6.12.86 through 6.12.*; unaffected 6.18.27 through 6.18.*; unaffected 7.0.4 through 7.0.*; unaffected 7.1 through * |
CWE
No CWE identifiers supplied.
References
- https://git.kernel.org/stable/c/516467052fdfc6a13eadc70d43420ae57436bf3c
- https://git.kernel.org/stable/c/42dc622776f3ce1a6c31b13bdc686f7295e3b323
- https://git.kernel.org/stable/c/da4f46c5cf1d26e6b09418ad453e152f2e75a02c
- https://git.kernel.org/stable/c/fdc150dac1adb9a98be9d6956cff0348838b024a
- https://git.kernel.org/stable/c/6be2cb75bc1300080cfc8051579f22efae9401f7
- https://git.kernel.org/stable/c/8cd35ceadcfc8c5da2eb7f7ce24525ce9d4ee62e