CVE-2023-53052
- Source
- https://nvd.nist.gov/vuln/detail/CVE-2023-53052
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2023-53052.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2023-53052
- Downstream
- Related
- Published
- 2025-05-02T15:55:07Z
- Modified
- 2025-10-21T15:21:12.280784Z
- Summary
- cifs: fix use-after-free bug in refresh_cache_worker()
- Details
-
In the Linux kernel, the following vulnerability has been resolved:
cifs: fix use-after-free bug in refreshcacheworker()
The UAF bug occurred because we were putting DFS root sessions in cifs_umount() while DFS cache refresher was being executed.
Make DFS root sessions have same lifetime as DFS tcons so we can avoid the use-after-free bug is DFS cache refresher and other places that require IPCs to get new DFS referrals on. Also, get rid of mount group handling in DFS cache as we no longer need it.
This fixes below use-after-free bug catched by KASAN
[ 379.946955] BUG: KASAN: use-after-free in refreshtcon.isra.0+0x10b/0xc10 [cifs] [ 379.947642] Read of size 8 at addr ffff888018f57030 by task kworker/u4:3/56 [ 379.948096] [ 379.948208] CPU: 0 PID: 56 Comm: kworker/u4:3 Not tainted 6.2.0-rc7-lku #23 [ 379.948661] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS rel-1.16.0-0-gd239552-rebuilt.opensuse.org 04/01/2014 [ 379.949368] Workqueue: cifs-dfscache refreshcacheworker [cifs] [ 379.949942] Call Trace: [ 379.950113] <TASK> [ 379.950260] dumpstacklvl+0x50/0x67 [ 379.950510] printreport+0x16a/0x48e [ 379.950759] ? _virtaddrvalid+0xd8/0x160 [ 379.951040] ? _physaddr+0x41/0x80 [ 379.951285] kasanreport+0xdb/0x110 [ 379.951533] ? _refreshtcon.isra.0+0x10b/0xc10 [cifs] [ 379.952056] ? _refreshtcon.isra.0+0x10b/0xc10 [cifs] [ 379.952585] _refreshtcon.isra.0+0x10b/0xc10 [cifs] [ 379.953096] ? _pfxrefreshtcon.isra.0+0x10/0x10 [cifs] [ 379.953637] ? pfxmutexlock+0x10/0x10 [ 379.953915] ? lockrelease+0xb6/0x720 [ 379.954167] ? _pfxlockacquire+0x10/0x10 [ 379.954443] ? refreshcacheworker+0x34e/0x6d0 [cifs] [ 379.954960] ? _pfxwbworkfn+0x10/0x10 [ 379.955239] refreshcacheworker+0x4ad/0x6d0 [cifs] [ 379.955755] ? _pfxrefreshcacheworker+0x10/0x10 [cifs] [ 379.956323] ? _pfxlockacquired+0x10/0x10 [ 379.956615] ? readwordatatime+0xe/0x20 [ 379.956898] ? lockdephardirqsonprepare+0x12/0x220 [ 379.957235] processonework+0x535/0x990 [ 379.957509] ? _pfxprocessonework+0x10/0x10 [ 379.957812] ? lockacquired+0xb7/0x5f0 [ 379.958069] ? _listaddvalid+0x37/0xd0 [ 379.958341] ? _listaddvalid+0x37/0xd0 [ 379.958611] workerthread+0x8e/0x630 [ 379.958861] ? _pfxworkerthread+0x10/0x10 [ 379.959148] kthread+0x17d/0x1b0 [ 379.959369] ? _pfxkthread+0x10/0x10 [ 379.959630] retfrom_fork+0x2c/0x50 [ 379.959879] </TASK>
- 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
-
Introduced6916881f443f67f6893b504fa2171468c8aed915Fixed5a89d81c1a3c152837ea204fd29572228e54ce0b
- Type
- GIT
- Repo
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- Events
-
Introduced6916881f443f67f6893b504fa2171468c8aed915Fixed396935de145589c8bfe552fa03a5e38604071829
Affected versions
v6.*
v6.2
v6.2-rc1
v6.2-rc2
v6.2-rc3
v6.2-rc4
v6.2-rc5
v6.2-rc6
v6.2-rc7
v6.2-rc8
v6.2.1
v6.2.2
v6.2.3
v6.2.4
v6.2.5
v6.2.6
v6.2.7
v6.3-rc1
Database specific
vanir_signatures
[
{
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"id": "CVE-2023-53052-051b815d",
"deprecated": false,
"signature_version": "v1",
"target": {
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"id": "CVE-2023-53052-12a6dcb4",
"deprecated": false,
"signature_version": "v1",
"target": {
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