CVE-2026-89887

media: i2c: ov7740: fix use-after-destroy in remove

State: Published
Severity: 7.8 High
Published: Sep 16, 2026
Updated: Oct 19, 2026
Reserved: Sep 11, 2026

Description

In the Linux kernel, the following vulnerability has been resolved:

media: i2c: ov7740: fix use-after-destroy in remove

The ov7740_remove() function had a severe teardown order bug where it destroyed the driver's mutex before freeing the V4L2 control handler which relies on that mutex, leading to a use-after-destroy kernel panic. Furthermore, the driver explicitly called v4l2_ctrl_handler_free() and mutex_destroy() sequentially, but then called ov7740_free_controls() which invokes both of them a second time, resulting in a double-free.

This patch fixes the issue by unregistering the subdevice first, and relying exclusively on ov7740_free_controls() to safely tear down the mutex and control handler in the correct order.

Scores

CVSS	Score	Vector	Source
3.1	7.8 High	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H	Linux

Weaknesses

The record names no weakness.

Affected Products

Product	Versions
LinuxLinux	39c5c4471b8d793daf868bd004e56ed420e89707 to before 9e4693436c7dcf8584002500ce4b434b79bbf9edAffected 39c5c4471b8d793daf868bd004e56ed420e89707 to before 81e9765878d3ac8ad18e3a683332b5d6bc3a0e33Affected 39c5c4471b8d793daf868bd004e56ed420e89707 to before 8a02ee6c1c4e88f3a0442bd60d3c77db9a30db5eAffected 39c5c4471b8d793daf868bd004e56ed420e89707 to before 7512838a19af0a284a58435292243fad21e57ff1Affected 39c5c4471b8d793daf868bd004e56ed420e89707 to before 25e2505866c577db2661e4d431f0907c6ec9a3b4Affected 39c5c4471b8d793daf868bd004e56ed420e89707 to before af81f35e4f429e769b784754e1aa4d7a922470acAffected 39c5c4471b8d793daf868bd004e56ed420e89707 to before 09453b467990e8ef8fe09f45a685f9a625248d33Affected 39c5c4471b8d793daf868bd004e56ed420e89707 to before 5d1b3dea5a44124bab6c14a2d71b977dabed54e7Affected
LinuxLinux	4.16Affected before 4.16Not affected 5.10.270 through 5.10.Not affected 5.15.221 through 5.15.Not affected 6.1.188 through 6.1.Not affected 6.6.157 through 6.6.Not affected 6.12.110 through 6.12.Not affected 6.18.51 through 6.18.Not affected 7.2.5 through 7.2.*Not affected 7.3 and laterNot affected

Product

Versions

LinuxLinux

39c5c4471b8d793daf868bd004e56ed420e89707 to before 9e4693436c7dcf8584002500ce4b434b79bbf9edAffected
39c5c4471b8d793daf868bd004e56ed420e89707 to before 81e9765878d3ac8ad18e3a683332b5d6bc3a0e33Affected
39c5c4471b8d793daf868bd004e56ed420e89707 to before 8a02ee6c1c4e88f3a0442bd60d3c77db9a30db5eAffected
39c5c4471b8d793daf868bd004e56ed420e89707 to before 7512838a19af0a284a58435292243fad21e57ff1Affected
39c5c4471b8d793daf868bd004e56ed420e89707 to before 25e2505866c577db2661e4d431f0907c6ec9a3b4Affected
39c5c4471b8d793daf868bd004e56ed420e89707 to before af81f35e4f429e769b784754e1aa4d7a922470acAffected
39c5c4471b8d793daf868bd004e56ed420e89707 to before 09453b467990e8ef8fe09f45a685f9a625248d33Affected
39c5c4471b8d793daf868bd004e56ed420e89707 to before 5d1b3dea5a44124bab6c14a2d71b977dabed54e7Affected

LinuxLinux

4.16Affected
before 4.16Not affected
5.10.270 through 5.10.*Not affected
5.15.221 through 5.15.*Not affected
6.1.188 through 6.1.*Not affected
6.6.157 through 6.6.*Not affected
6.12.110 through 6.12.*Not affected
6.18.51 through 6.18.*Not affected
7.2.5 through 7.2.*Not affected
7.3 and laterNot affected

References

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