media: i2c: ov7740: fix use-after-destroy in remove
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.
CVE-2026-89887
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: cve:CVE-2026-89887
Linux
Source reference: /containers/cna/affected/0/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Linux
Source reference: /containers/cna/affected/1/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "39c5c4471b8d793daf868bd004e56ed420e89707",
"lessThan": "9e4693436c7dcf8584002500ce4b434b79bbf9ed",
"versionType": "git"
},
{
"status": "affected",
"version": "39c5c4471b8d793daf868bd004e56ed420e89707",
"lessThan": "81e9765878d3ac8ad18e3a683332b5d6bc3a0e33",
"versionType": "git"
},
{
"status": "affected",
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"lessThan": "8a02ee6c1c4e88f3a0442bd60d3c77db9a30db5e",
"versionType": "git"
},
{
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"lessThan": "7512838a19af0a284a58435292243fad21e57ff1",
"versionType": "git"
},
{
"status": "affected",
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"lessThan": "25e2505866c577db2661e4d431f0907c6ec9a3b4",
"versionType": "git"
},
{
"status": "affected",
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"lessThan": "af81f35e4f429e769b784754e1aa4d7a922470ac",
"versionType": "git"
},
{
"status": "affected",
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"versionType": "git"
},
{
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"lessThan": "5d1b3dea5a44124bab6c14a2d71b977dabed54e7",
"versionType": "git"
}
],
"programFiles": [
"drivers/media/i2c/ov7740.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "4.16"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "4.16",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "5.10.270",
"versionType": "semver",
"lessThanOrEqual": "5.10.*"
},
{
"status": "unaffected",
"version": "5.15.221",
"versionType": "semver",
"lessThanOrEqual": "5.15.*"
},
{
"status": "unaffected",
"version": "6.1.188",
"versionType": "semver",
"lessThanOrEqual": "6.1.*"
},
{
"status": "unaffected",
"version": "6.6.157",
"versionType": "semver",
"lessThanOrEqual": "6.6.*"
},
{
"status": "unaffected",
"version": "6.12.110",
"versionType": "semver",
"lessThanOrEqual": "6.12.*"
},
{
"status": "unaffected",
"version": "6.18.51",
"versionType": "semver",
"lessThanOrEqual": "6.18.*"
},
{
"status": "unaffected",
"version": "7.2.5",
"versionType": "semver",
"lessThanOrEqual": "7.2.*"
},
{
"status": "unaffected",
"version": "7.3",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"drivers/media/i2c/ov7740.c"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2026-89887
Source reference:
/cveMetadata/cveId
Publisher severity
high
Source reference: /containers/cna/metrics
- Event
- #36335 · Revision 1
- Added to Heist Feed
- Publisher date