Description (CNA)
In the Linux kernel, the following vulnerability has been resolved: lockd: Plug nlm_file leak when nlm_do_fopen() fails A client can repeatedly drive nlm_do_fopen() failures by presenting file handles that the underlying export rejects. After kzalloc_obj() succeeds in nlm_lookup_file(), the freshly allocated nlm_file is not yet inserted into nlm_files[]. The nlm_do_fopen() failure path jumps to out_unlock, which releases nlm_file_mutex and returns without freeing the allocation, so each failure leaks one nlm_file. Route the failure through out_free so kfree() runs before the function returns.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected e580323ac0b51ad10ec2e181d1f777479b7983e7 before bca74fff138429f3d5802865f38fc883d53a4f1a; affected 7f024fcd5c97dc70bb9121c80407cf3cf9be7159 before d7c677feb3aa1f42b1026d75a8ea61338b51e4fb; affected 7f024fcd5c97dc70bb9121c80407cf3cf9be7159 before 39f59bf67231ed2eb0cdf6337194360e964b609a; affected 7f024fcd5c97dc70bb9121c80407cf3cf9be7159 before ddfbd816273b4e9c9b836f5b8773664c6f40f807; affected 7f024fcd5c97dc70bb9121c80407cf3cf9be7159 before 1403f1221a35a6caf959bb7bf005741f17263c66; affected 7f024fcd5c97dc70bb9121c80407cf3cf9be7159 before 1161c4b5bd0048c8148e919f818a33cff3623ef0; affected 7f024fcd5c97dc70bb9121c80407cf3cf9be7159 before 3f2dc01b9cb516d4727a3b9263ee58c71ca00ba9; affected 7f024fcd5c97dc70bb9121c80407cf3cf9be7159 before f16a1513452edb532fec81e591c64c320866719c; affected 5.10.220 before 5.10.261 |
| Linux / Linux | affected 5.15; unaffected 0 before 5.15; unaffected 5.10.261 through 5.10.*; unaffected 5.15.212 through 5.15.*; unaffected 6.1.178 through 6.1.*; unaffected 6.6.145 through 6.6.*; unaffected 6.12.97 through 6.12.*; unaffected 6.18.40 through 6.18.*; unaffected 7.1.5 through 7.1.*; unaffected 7.2 through * |
CWE
No CWE identifiers supplied.
References
- https://git.kernel.org/stable/c/bca74fff138429f3d5802865f38fc883d53a4f1a
- https://git.kernel.org/stable/c/d7c677feb3aa1f42b1026d75a8ea61338b51e4fb
- https://git.kernel.org/stable/c/39f59bf67231ed2eb0cdf6337194360e964b609a
- https://git.kernel.org/stable/c/ddfbd816273b4e9c9b836f5b8773664c6f40f807
- https://git.kernel.org/stable/c/1403f1221a35a6caf959bb7bf005741f17263c66
- https://git.kernel.org/stable/c/1161c4b5bd0048c8148e919f818a33cff3623ef0
- https://git.kernel.org/stable/c/3f2dc01b9cb516d4727a3b9263ee58c71ca00ba9
- https://git.kernel.org/stable/c/f16a1513452edb532fec81e591c64c320866719c