CVE-2026-72219

Summary

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 Software

VendorProductVersion RangeStatus
LinuxLinuxe580323ac0b51ad10ec2e181d1f777479b7983e7 < bca74fff138429f3d5802865f38fc883d53a4f1aaffected
LinuxLinux7f024fcd5c97dc70bb9121c80407cf3cf9be7159 < d7c677feb3aa1f42b1026d75a8ea61338b51e4fbaffected
LinuxLinux7f024fcd5c97dc70bb9121c80407cf3cf9be7159 < 39f59bf67231ed2eb0cdf6337194360e964b609aaffected
LinuxLinux7f024fcd5c97dc70bb9121c80407cf3cf9be7159 < ddfbd816273b4e9c9b836f5b8773664c6f40f807affected
LinuxLinux7f024fcd5c97dc70bb9121c80407cf3cf9be7159 < 1403f1221a35a6caf959bb7bf005741f17263c66affected
LinuxLinux7f024fcd5c97dc70bb9121c80407cf3cf9be7159 < 1161c4b5bd0048c8148e919f818a33cff3623ef0affected
LinuxLinux7f024fcd5c97dc70bb9121c80407cf3cf9be7159 < 3f2dc01b9cb516d4727a3b9263ee58c71ca00ba9affected
LinuxLinux7f024fcd5c97dc70bb9121c80407cf3cf9be7159 < f16a1513452edb532fec81e591c64c320866719caffected
LinuxLinux5.10.220 < 5.10.261affected
LinuxLinux5.15affected
LinuxLinux0 < 5.15unaffected
LinuxLinux5.10.261 <= 5.10.*unaffected
LinuxLinux5.15.212 <= 5.15.*unaffected
LinuxLinux6.1.178 <= 6.1.*unaffected
LinuxLinux6.6.145 <= 6.6.*unaffected
LinuxLinux6.12.97 <= 6.12.*unaffected
LinuxLinux6.18.40 <= 6.18.*unaffected
LinuxLinux7.1.5 <= 7.1.*unaffected
LinuxLinux7.2 <= *unaffected

Weaknesses

References