High severity · published Dec 19, 2023
CVE-2023-6932
Use-after-free in Linux kernel's ipv4: igmp component
7.0
CVSS
0.4%
EPSS
No
On KEV
Description
A use-after-free vulnerability in the Linux kernel's ipv4: igmp component can be exploited to achieve local privilege escalation.
A race condition can be exploited to cause a timer be mistakenly registered on a RCU read locked object which is freed by another thread.
We recommend upgrading past commit e2b706c691905fe78468c361aaabc719d0a496f1.
CVSS vector
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack vector
Local
Complexity
High
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.4% · higher than 30% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
KE
Kernel · Linux
2.6.12 before 6.7 · source: vendor, NVD
DL
Debian Linux · Debian
10.0 · source: NVD
SS
SIMATIC S7-1500 CPU 1518-4 PN/DP MFP · Siemens
V3.1.0 before V3.1.5; V3.1.0 before V3.1.5 · source: CISA
SS
SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP · Siemens
V3.1.0 before V3.1.5; V3.1.0 before V3.1.5 · source: CISA
SS
SIMATIC S7-1500 TM MFP - GNU/Linux subsystem · Siemens
before V1.1; before V1.1.1 · source: CISA
SS
SIPLUS S7-1500 CPU 1518-4 PN/DP MFP · Siemens
V3.1.0 before V3.1.5 · source: CISA
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2023-6932
CVE.org
https://www.cve.org/CVERecord?id=CVE-2023-6932
Third Party Advisory
http://packetstormsecurity.com/files/177029/Kernel-Live-Patch-Security-Notice-LSN-0100-1.html
Mailing List
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit?id=e2b706c691905fe78468c361aaabc719d0a496f1
Patch
https://kernel.dance/e2b706c691905fe78468c361aaabc719d0a496f1
Mailing List
https://lists.debian.org/debian-lts-announce/2024/01/msg00004.html
Mailing List
https://lists.debian.org/debian-lts-announce/2024/01/msg00005.html
cert-portal.siemens.com
https://cert-portal.siemens.com/productcert/html/ssa-265688.html
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