{"id":"CVE-2026-89866","title":"In the Linux kernel, the following vulnerability has been resolved:\n\nmedia: chips-media: wave5: Resume device before setting EOS flag\n\nSetting the EOS flag talks to the firmware via send_firmware_command(),\nwhich accesses VPU registers","summary":"In the Linux kernel, the following vulnerability has been resolved:\n\nmedia: chips-media: wave5: Resume device before setting EOS flag\n\nSetting the EOS flag talks to the firmware via send_firmware_command(),\nwhich accesses VPU registers. …","severity":"none","vendor":"Linux","product":"Linux","affected":["Linux >= 9707a6254a8a6b978bde811a44fe07d86c229d1c < 2215e55ee1e5e69ad53862d968360c5aa63dd3a7","Linux >= 9707a6254a8a6b978bde811a44fe07d86c229d1c < a52e6f7923c17a672135b485ffd96fbd72f46267","Linux 6.8"],"published":"2026-09-16","updated":"2026-09-16","sourceUpdated":"2026-09-16T11:16:54.743","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-89866","references":[{"url":"https://git.kernel.org/stable/c/2215e55ee1e5e69ad53862d968360c5aa63dd3a7","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/a52e6f7923c17a672135b485ffd96fbd72f46267","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"}],"tags":["nvd","cve.org"],"ingestedAt":"2026-09-16T10:53:53.989Z","epss":0.00198,"epssPercentile":0.08461,"slug":"CVE-2026-89866","body":"## Overview\n\nIn the Linux kernel, the following vulnerability has been resolved:\n\nmedia: chips-media: wave5: Resume device before setting EOS flag\n\nSetting the EOS flag talks to the firmware via send_firmware_command(),\nwhich accesses VPU registers. Both the STREAMOFF path\n(wave5_vpu_dec_job_abort()) and the V4L2_DEC_CMD_STOP path\n(wave5_vpu_dec_stop()) can run while the device is runtime suspended, so\nthose register accesses hit powered-down hardware and the SoC raises an\nasynchronous SError, panicking the kernel:\n\n  SError Interrupt on CPU3, code 0x00000000bf000000 -- SError\n   send_firmware_command+0x2c/0x160 [wave5]\n   wave5_vpu_dec_set_bitstream_flag+0x6c/0x80 [wave5]\n   wave5_vpu_dec_update_bitstream_buffer+0x80/0xec [wave5]\n   wave5_vpu_dec_job_abort+0x44/0xa0 [wave5]\n   v4l2_m2m_cancel_job+0x110/0x19c [v4l2_mem2mem]\n   v4l2_m2m_streamoff+0x24/0x140 [v4l2_mem2mem]\n\nResume the device with pm_runtime_resume_and_get() around the EOS\nfirmware command and release it with pm_runtime_put_autosuspend(),\nmatching the runtime PM handling already done in\nwave5_vpu_dec_device_run().\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":3,"depthScoreParts":{"impact":2.8,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}