CVE-2026-46058 (GCVE-0-2026-46058)

Vulnerability from cvelistv5 – Published: 2026-05-27 12:57 – Updated: 2026-05-27 12:57
VLAI
Title
media: amphion: Fix race between m2m job_abort and device_run
Summary
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
Severity
No CVSS data available.
Assigner
Impacted products
Vendor Product Version
Linux Linux Affected: 3cd084519c6f91cbef9d604bcf26844fa81d4922 , < 42dc622776f3ce1a6c31b13bdc686f7295e3b323 (git)
Affected: 3cd084519c6f91cbef9d604bcf26844fa81d4922 , < da4f46c5cf1d26e6b09418ad453e152f2e75a02c (git)
Affected: 3cd084519c6f91cbef9d604bcf26844fa81d4922 , < fdc150dac1adb9a98be9d6956cff0348838b024a (git)
Affected: 3cd084519c6f91cbef9d604bcf26844fa81d4922 , < 6be2cb75bc1300080cfc8051579f22efae9401f7 (git)
Affected: 3cd084519c6f91cbef9d604bcf26844fa81d4922 , < 8cd35ceadcfc8c5da2eb7f7ce24525ce9d4ee62e (git)
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Linux Linux Affected: 5.18
Unaffected: 0 , < 5.18 (semver)
Unaffected: 6.6.140 , ≤ 6.6.* (semver)
Unaffected: 6.12.86 , ≤ 6.12.* (semver)
Unaffected: 6.18.27 , ≤ 6.18.* (semver)
Unaffected: 7.0.4 , ≤ 7.0.* (semver)
Unaffected: 7.1-rc1 , ≤ * (original_commit_for_fix)
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Show details on NVD website

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            "drivers/media/platform/amphion/vpu_v4l2.c"
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          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nmedia: amphion: Fix race between m2m job_abort and device_run\n\nFix kernel panic caused by race condition where v4l2_m2m_ctx_release()\nfrees m2m_ctx while v4l2_m2m_try_run() is about to call device_run\nwith the same context.\n\nRace sequence:\n  v4l2_m2m_try_run():           v4l2_m2m_ctx_release():\n    lock/unlock                   v4l2_m2m_cancel_job()\n                                    job_abort()\n                                      v4l2_m2m_job_finish()\n                                  kfree(m2m_ctx)  \u003c- frees ctx\n    device_run()  \u003c- use-after-free crash at 0x538\n\nCrash trace:\n  Unable to handle kernel read from unreadable memory at virtual address\n  0000000000000538\n  v4l2_m2m_try_run+0x78/0x138\n  v4l2_m2m_device_run_work+0x14/0x20\n\nThe amphion vpu driver does not rely on the m2m framework\u0027s device_run\ncallback to perform encode/decode operations.\n\nFix the race by preventing m2m framework job scheduling entirely:\n- Add job_ready callback returning 0 (no jobs ready for m2m framework)\n- Remove job_abort callback to avoid the race condition"
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          "url": "https://git.kernel.org/stable/c/8cd35ceadcfc8c5da2eb7f7ce24525ce9d4ee62e"
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    "datePublished": "2026-05-27T12:57:17.853Z",
    "dateReserved": "2026-05-13T15:03:33.095Z",
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