Description (CNA)
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 (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected 2bbf2b1c20f934a054172175ccbabcc01fe69ef6 before 60ef1675b652e912f3eb064767af4432393291fd; affected bc90fbe0c3182157d2be100a2f6c2edbb1820677 before 26e19622c485e53c3fdb299e822068a0542ddf0c; affected bc90fbe0c3182157d2be100a2f6c2edbb1820677 before 91d13e92b983e6c6d7631012c2e20ae8057de9f2; affected bc90fbe0c3182157d2be100a2f6c2edbb1820677 before d7f4dd4c8fb380898fef7a77d48fce7ccdb4fc32; affected bc90fbe0c3182157d2be100a2f6c2edbb1820677 before dc416e32baaeb620b9809e9e25fc7b30889686e9; affected 3ffe14c36985e3174933127c9efad82ac8f3fefb; affected 6.6.16 before 6.6.142; affected 6.7.4 before 6.8 |
| Linux / Linux | affected 6.8; unaffected 0 before 6.8; unaffected 6.6.142 through 6.6.*; unaffected 6.12.92 through 6.12.*; unaffected 6.18.34 through 6.18.*; unaffected 7.0.11 through 7.0.*; unaffected 7.1 through * |
CWE
No CWE identifiers supplied.
References
- https://git.kernel.org/stable/c/60ef1675b652e912f3eb064767af4432393291fd
- https://git.kernel.org/stable/c/26e19622c485e53c3fdb299e822068a0542ddf0c
- https://git.kernel.org/stable/c/91d13e92b983e6c6d7631012c2e20ae8057de9f2
- https://git.kernel.org/stable/c/d7f4dd4c8fb380898fef7a77d48fce7ccdb4fc32
- https://git.kernel.org/stable/c/dc416e32baaeb620b9809e9e25fc7b30889686e9