AI Score
Confidence
Low
EPSS
Percentile
9.0%
SSVC
Exploitation
none
Automatable
no
Technical Impact
total
In the Linux kernel, the following vulnerability has been resolved:
thermal/debugfs: Prevent use-after-free from occurring after cdev removal
Since thermal_debug_cdev_remove() does not run under cdev->lock, it can
run in parallel with thermal_debug_cdev_state_update() and it may free
the struct thermal_debugfs object used by the latter after it has been
checked against NULL.
If that happens, thermal_debug_cdev_state_update() will access memory
that has been freed already causing the kernel to crash.
Address this by using cdev->lock in thermal_debug_cdev_remove() around
the cdev->debugfs value check (in case the same cdev is removed at the
same time in two different threads) and its reset to NULL.
Cc :6.8+ <[email protected]> # 6.8+
[
{
"product": "Linux",
"vendor": "Linux",
"defaultStatus": "unaffected",
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"programFiles": [
"drivers/thermal/thermal_debugfs.c"
],
"versions": [
{
"version": "755113d76786",
"lessThan": "c1279dee3336",
"status": "affected",
"versionType": "git"
},
{
"version": "755113d76786",
"lessThan": "d351eb0ab04c",
"status": "affected",
"versionType": "git"
}
]
},
{
"product": "Linux",
"vendor": "Linux",
"defaultStatus": "affected",
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"programFiles": [
"drivers/thermal/thermal_debugfs.c"
],
"versions": [
{
"version": "6.8",
"status": "affected"
},
{
"version": "0",
"lessThan": "6.8",
"status": "unaffected",
"versionType": "custom"
},
{
"version": "6.8.10",
"lessThanOrEqual": "6.8.*",
"status": "unaffected",
"versionType": "custom"
},
{
"version": "6.9",
"lessThanOrEqual": "*",
"status": "unaffected",
"versionType": "original_commit_for_fix"
}
]
}
]
[
{
"cpes": [
"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*"
],
"vendor": "linux",
"product": "linux_kernel",
"versions": [
{
"status": "affected",
"version": "755113d76786",
"lessThan": "c1279dee3336",
"versionType": "custom"
},
{
"status": "affected",
"version": "755113d76786",
"lessThan": "d351eb0ab04c",
"versionType": "custom"
},
{
"status": "affected",
"version": "6.8"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "6.8",
"versionType": "custom"
},
{
"status": "unaffected",
"version": "6.8.10"
},
{
"status": "unaffected",
"version": "6.9"
}
],
"defaultStatus": "unknown"
}
]