CVE-2022-49281
- Source
- https://nvd.nist.gov/vuln/detail/CVE-2022-49281
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2022-49281.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2022-49281
- Downstream
- Related
- Published
- 2025-02-26T01:56:23.201Z
- Modified
- 2025-12-23T20:33:49.055921Z
- Summary
- cifs: fix handlecache and multiuser
- Details
-
In the Linux kernel, the following vulnerability has been resolved:
cifs: fix handlecache and multiuser
In multiuser each individual user has their own tcon structure for the share and thus their own handle for a cached directory. When we umount such a share we much make sure to release the pinned down dentry for each such tcon and not just the master tcon.
Otherwise we will get nasty warnings on umount that dentries are still in use: [ 3459.590047] BUG: Dentry 00000000115c6f41{i=12000000019d95,n=/} still in use\ (2) [unmount of cifs cifs] ... [ 3459.590492] Call Trace: [ 3459.590500] dwalk+0x61/0x2a0 [ 3459.590518] ? shrinklockdentry.part.0+0xe0/0xe0 [ 3459.590526] shrinkdcacheforumount+0x49/0x110 [ 3459.590535] genericshutdownsuper+0x1a/0x110 [ 3459.590542] killanonsuper+0x14/0x30 [ 3459.590549] cifskillsb+0xf5/0x104 [cifs] [ 3459.590773] deactivatelockedsuper+0x36/0xa0 [ 3459.590782] cleanupmnt+0x131/0x190 [ 3459.590789] taskworkrun+0x5c/0x90 [ 3459.590798] exittousermodeloop+0x151/0x160 [ 3459.590809] exittousermodeprepare+0x83/0xd0 [ 3459.590818] syscallexittousermode+0x12/0x30 [ 3459.590828] dosyscall64+0x48/0x90 [ 3459.590833] entrySYSCALL64after_hwframe+0x44/0xae
- Database specific
{ "cna_assigner": "Linux", "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/49xxx/CVE-2022-49281.json" }- References
-
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- https://git.kernel.org/stable/c/2fafbc198613823943c106d1ec9b516da692059f
- https://git.kernel.org/stable/c/47178c7722ac528ea08aa82c3ef9ffa178962d7a
- https://git.kernel.org/stable/c/e71f6a3a1d5c826a30384fec587ca7503ef6bde5
- https://git.kernel.org/stable/c/ffa631c4bff59dde59b598011f570e27dfba3515
- https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/49xxx/CVE-2022-49281.json
- https://nvd.nist.gov/vuln/detail/CVE-2022-49281
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
-
Introduced5e9c89d43fa6f5d458d4d0f9e22a67cc001c8da9Fixed2fafbc198613823943c106d1ec9b516da692059fFixedffa631c4bff59dde59b598011f570e27dfba3515Fixede71f6a3a1d5c826a30384fec587ca7503ef6bde5Fixed47178c7722ac528ea08aa82c3ef9ffa178962d7a