High severity · published Nov 3, 2023
CVE-2023-1194
Use-after-free in parse_lease_state()
8.1
CVSS
1.1%
EPSS
No
On KEV
Description
An out-of-bounds (OOB) memory read flaw was found in parse_lease_state in the KSMBD implementation of the in-kernel samba server and CIFS in the Linux kernel. When an attacker sends the CREATE command with a malformed payload to KSMBD, due to a missing check of `NameOffset` in the `parse_lease_state()` function, the `create_context` object can access invalid memory.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)1.1% · higher than 65% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
KE
Kernel · Linux
5.15 before 5.15.145; 5.16 before 6.1.34; 6.2 before 6.3.8; 6.4; 6.4; 6.4; +2 more · source: vendor, NVD
FE
Fedora · Fedoraproject
37 · source: vendor, NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2023-1194
CVE.org
https://www.cve.org/CVERecord?id=CVE-2023-1194
Third Party Advisory
https://access.redhat.com/security/cve/CVE-2023-1194
Issue Tracking
https://bugzilla.redhat.com/show_bug.cgi?id=2154176
Third Party Advisory
https://security.netapp.com/advisory/ntap-20231221-0006/
Mailing List
https://www.spinics.net/lists/stable-commits/msg303065.html
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