High severity · published May 8, 2023
CVE-2023-32233
In the Linux kernel through 6.3.1, a use-after-free in Netfilter nf_tables when processing batch requests can be abused to perform arbitrary read and write operations on kernel…
7.8
CVSS
13.4%
EPSS
No
On KEV
Description
In the Linux kernel through 6.3.1, a use-after-free in Netfilter nf_tables when processing batch requests can be abused to perform arbitrary read and write operations on kernel memory. Unprivileged local users can obtain root privileges. This occurs because anonymous sets are mishandled.
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack vector
Local
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)13.4% · higher than 96% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
KE
Kernel · Linux
3.13 before 4.14.315; 4.15 before 4.19.283; 4.20 before 5.4.243; 5.5 before 5.10.180; 5.11 before 5.15.111; 5.16 before 6.1.28; +2 more · source: NVD
EL
Enterprise Linux · Redhat
7.0; 8.0; 9.0 · source: NVD
HB
Hci Baseboard Management Controller · Netapp
h300s; h410c; h410s; h500s; h700s · source: NVD
SS
SIMATIC S7-1500 TM MFP - GNU/Linux subsystem · Siemens
before V1.1 · source: CISA
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2023-32233
CVE.org
https://www.cve.org/CVERecord?id=CVE-2023-32233
Patch
http://packetstormsecurity.com/files/173087/Kernel-Live-Patch-Security-Notice-LSN-0095-1.html
Mailing List
http://www.openwall.com/lists/oss-security/2023/05/15/5
Issue Tracking
https://bugzilla.redhat.com/show_bug.cgi?id=2196105
Mailing List
https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=c1592a89942e9678f7d9c8030efa777c0d57edab
Patch
https://github.com/torvalds/linux/commit/c1592a89942e9678f7d9c8030efa777c0d57edab
Third Party Advisory
https://lists.debian.org/debian-lts-announce/2023/06/msg00008.html
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