CVE-2022-50076

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Source
https://cve.org/CVERecord?id=CVE-2022-50076
Import Source
https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2022-50076.json
JSON Data
https://api.test.osv.dev/v1/vulns/CVE-2022-50076
Downstream
Related
Published
2025-06-18T11:02:19.514Z
Modified
2026-04-03T13:14:20.217381150Z
Summary
cifs: Fix memory leak on the deferred close
Details

In the Linux kernel, the following vulnerability has been resolved:

cifs: Fix memory leak on the deferred close

xfstests on smb21 report kmemleak as below:

unreferenced object 0xffff8881767d6200 (size 64): comm "xfsio", pid 1284, jiffies 4294777434 (age 20.789s) hex dump (first 32 bytes): 80 5a d0 11 81 88 ff ff 78 8a aa 63 81 88 ff ff .Z......x..c.... 00 71 99 76 81 88 ff ff 00 00 00 00 00 00 00 00 .q.v............ backtrace: [<00000000ad04e6ea>] cifsclose+0x92/0x2c0 [<0000000028b93c82>] __fput+0xff/0x3f0 [<00000000d8116851>] taskworkrun+0x85/0xc0 [<0000000027e14f9e>] do_exit+0x5e5/0x1240 [<00000000fb492b95>] dogroupexit+0x58/0xe0 [<00000000129a32d9>] _x64sysexitgroup+0x28/0x30 [<00000000e3f7d8e9>] dosyscall64+0x35/0x80 [<00000000102e8a0b>] entrySYSCALL64afterhwframe+0x46/0xb0

When cancel the deferred close work, we should also cleanup the struct cifsdeferredclose.

Database specific 
{
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/50xxx/CVE-2022-50076.json",
    "cna_assigner": "Linux"
}
References

Affected packages

Git / git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git

Affected ranges

Type
GIT
Repo
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Events
Introduced
9e992755be8f2d458a0bcbefd19e493483c1dba2
Fixed
860efae127888ae535bc4eda1b7f27642727c69e
Fixed
60b6d38add7b9c17d6e5d49ee8e930ea1a5650c5
Fixed
ca08d0eac020d48a3141dbec0a3cf64fbdb17cde
Type
GIT
Repo
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Last affected
0ca6ac8a2691762307beaa4841255d1cfe6b2684

Database specific

source 
"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2022-50076.json"