DEBIAN-CVE-2023-53246

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Source
https://security-tracker.debian.org/tracker/CVE-2023-53246
Import Source
https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2023-53246.json
JSON Data
https://api.test.osv.dev/v1/vulns/DEBIAN-CVE-2023-53246
Upstream
Published
2025-09-15T15:15:51Z
Modified
2025-09-19T07:33:40.918259Z
Summary
[none]
Details

In the Linux kernel, the following vulnerability has been resolved: cifs: fix DFS traversal oops without CONFIGCIFSDFSUPCALL When compiled with CONFIGCIFSDFSUPCALL disabled, cifsdfsdautomount is NULL. cifs.ko logic for mapping CIFSFATTRDFSREFERRAL attributes to SAUTOMOUNT and corresponding dentry flags is retained regardless of CONFIGCIFSDFSUPCALL, leading to a NULL pointer dereference in VFS followautomount() when traversing a DFS referral link: BUG: kernel NULL pointer dereference, address: 0000000000000000 ... Call Trace: <TASK> _traversemounts+0xb5/0x220 ? cifsrevalidatemapping+0x65/0xc0 [cifs] stepinto+0x195/0x610 ? lookupfast+0xe2/0xf0 pathlookupat+0x64/0x140 filenamelookup+0xc2/0x140 ? _createobject+0x299/0x380 ? kmemcachealloc+0x119/0x220 ? userpathatempty+0x31/0x50 userpathatempty+0x31/0x50 _x64syschdir+0x2a/0xd0 ? exittousermodeprepare+0xca/0x100 dosyscall64+0x42/0x90 entrySYSCALL64afterhwframe+0x72/0xdc This fix adds an inline cifsdfsdautomount() {return -EREMOTE} handler when CONFIGCIFSDFSUPCALL is disabled. An alternative would be to avoid flagging SAUTOMOUNT, etc. without CONFIGCIFSDFSUPCALL. This approach was chosen as it provides more control over the error path.

References

Affected packages

Debian:11 / linux

Package

Name
linux
Purl
pkg:deb/debian/linux?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
5.10.178-1

Affected versions

5.*

5.10.46-4
5.10.46-5
5.10.70-1~bpo10+1
5.10.70-1
5.10.84-1
5.10.92-1~bpo10+1
5.10.92-1
5.10.92-2
5.10.103-1~bpo10+1
5.10.103-1
5.10.106-1
5.10.113-1
5.10.120-1~bpo10+1
5.10.120-1
5.10.127-1
5.10.127-2~bpo10+1
5.10.127-2
5.10.136-1
5.10.140-1
5.10.148-1
5.10.149-1
5.10.149-2
5.10.158-1
5.10.158-2
5.10.162-1

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Debian:12 / linux

Package

Name
linux
Purl
pkg:deb/debian/linux?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
6.1.25-1

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Debian:13 / linux

Package

Name
linux
Purl
pkg:deb/debian/linux?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
6.1.25-1

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Debian:14 / linux

Package

Name
linux
Purl
pkg:deb/debian/linux?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
6.1.25-1

Ecosystem specific 

{
    "urgency": "not yet assigned"
}