{"id":"CVE-2026-89887","title":"In the Linux kernel, the following vulnerability has been resolved:\n\nmedia: i2c: ov7740: fix use-after-destroy in remove\n\nThe ov7740_remove() function had a severe teardown order bug where it\ndestroyed the driver's mutex before freeing t…","summary":"In the Linux kernel, the following vulnerability has been resolved:\n\nmedia: i2c: ov7740: fix use-after-destroy in remove\n\nThe ov7740_remove() function had a severe teardown order bug where it\ndestroyed the driver's mutex before freeing t…","severity":"high","cvss":7.8,"cvssVector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","vendor":"Linux","product":"Linux","affected":["Linux >= 39c5c4471b8d793daf868bd004e56ed420e89707 < 9e4693436c7dcf8584002500ce4b434b79bbf9ed","Linux >= 39c5c4471b8d793daf868bd004e56ed420e89707 < 81e9765878d3ac8ad18e3a683332b5d6bc3a0e33","Linux >= 39c5c4471b8d793daf868bd004e56ed420e89707 < 8a02ee6c1c4e88f3a0442bd60d3c77db9a30db5e","Linux >= 39c5c4471b8d793daf868bd004e56ed420e89707 < 7512838a19af0a284a58435292243fad21e57ff1","Linux >= 39c5c4471b8d793daf868bd004e56ed420e89707 < 25e2505866c577db2661e4d431f0907c6ec9a3b4","Linux >= 39c5c4471b8d793daf868bd004e56ed420e89707 < af81f35e4f429e769b784754e1aa4d7a922470ac","Linux >= 39c5c4471b8d793daf868bd004e56ed420e89707 < 09453b467990e8ef8fe09f45a685f9a625248d33","Linux >= 39c5c4471b8d793daf868bd004e56ed420e89707 < 5d1b3dea5a44124bab6c14a2d71b977dabed54e7","Linux 4.16"],"published":"2026-09-16","updated":"2026-09-16","sourceUpdated":"2026-09-16T15:18:15.230","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-89887","references":[{"url":"https://git.kernel.org/stable/c/09453b467990e8ef8fe09f45a685f9a625248d33","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/25e2505866c577db2661e4d431f0907c6ec9a3b4","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/5d1b3dea5a44124bab6c14a2d71b977dabed54e7","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/7512838a19af0a284a58435292243fad21e57ff1","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/81e9765878d3ac8ad18e3a683332b5d6bc3a0e33","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/8a02ee6c1c4e88f3a0442bd60d3c77db9a30db5e","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/9e4693436c7dcf8584002500ce4b434b79bbf9ed","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/af81f35e4f429e769b784754e1aa4d7a922470ac","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"}],"tags":["nvd","cve.org"],"ingestedAt":"2026-09-16T10:53:53.983Z","epss":0.00164,"epssPercentile":0.06054,"slug":"CVE-2026-89887","body":"## Overview\n\nIn the Linux kernel, the following vulnerability has been resolved:\n\nmedia: i2c: ov7740: fix use-after-destroy in remove\n\nThe ov7740_remove() function had a severe teardown order bug where it\ndestroyed the driver's mutex before freeing the V4L2 control handler\nwhich relies on that mutex, leading to a use-after-destroy kernel panic.\nFurthermore, the driver explicitly called v4l2_ctrl_handler_free() and\nmutex_destroy() sequentially, but then called ov7740_free_controls()\nwhich invokes both of them a second time, resulting in a double-free.\n\nThis patch fixes the issue by unregistering the subdevice first, and\nrelying exclusively on ov7740_free_controls() to safely tear down the\nmutex and control handler in the correct order.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"twilight","depthScore":43,"depthScoreParts":{"impact":42.9,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[{"seq":205170,"id":"CVE-2026-89887","ts":1789570705568,"field":"cvss","old":null,"new":"7.8"},{"seq":205169,"id":"CVE-2026-89887","ts":1789570705568,"field":"severity","old":"none","new":"high"}]}