pds_core: fix debugfs_lookup dentry leak and error handling
3Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackepss 0.2%
exploitation probability
0.2%top 93% of all CVEs
observed exploitation
nono source reports it
In the Linux kernel, the following vulnerability has been resolved:
pds_core: fix debugfs_lookup dentry leak and error handling
debugfs_lookup() returns a dentry with an elevated reference count that
must be released with dput(). The current code discards the returned
dentry without calling dput(), causing a reference leak on every
firmware reset recovery.
Additionally, when CONFIG_DEBUG_FS is disabled, debugfs_lookup()
returns ERR_PTR(-ENODEV), not NULL. The current check passes for error
pointers and would call dput() on an invalid pointer, causing a crash.
Affected products
Linux · LinuxReferences
https://git.kernel.org/stable/c/26e19622c485e53c3fdb299e822068a0542ddf0chttps://git.kernel.org/stable/c/60ef1675b652e912f3eb064767af4432393291fdhttps://git.kernel.org/stable/c/91d13e92b983e6c6d7631012c2e20ae8057de9f2https://git.kernel.org/stable/c/d7f4dd4c8fb380898fef7a77d48fce7ccdb4fc32https://git.kernel.org/stable/c/dc416e32baaeb620b9809e9e25fc7b30889686e9