Vulnerability Details : CVE-2023-31248
Linux Kernel nftables Use-After-Free Local Privilege Escalation Vulnerability; `nft_chain_lookup_byid()` failed to check whether a chain was active and CAP_NET_ADMIN is in any user or network namespace
Vulnerability category: Memory CorruptionGain privilege
Products affected by CVE-2023-31248
- cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
- cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:esm:*:*:*
- cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:*
- cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:esm:*:*:*
- cpe:2.3:o:canonical:ubuntu_linux:20.04:*:*:*:lts:*:*:*
- cpe:2.3:o:canonical:ubuntu_linux:22.04:*:*:*:lts:*:*:*
- cpe:2.3:o:fedoraproject:fedora:37:*:*:*:*:*:*:*
- cpe:2.3:o:fedoraproject:fedora:38:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2023-31248
0.22%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 45 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2023-31248
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
7.8
|
HIGH | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
1.8
|
5.9
|
NIST | |
|
7.8
|
HIGH | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
1.8
|
5.9
|
Canonical Ltd. |
CWE ids for CVE-2023-31248
-
The product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.Assigned by:
- nvd@nist.gov (Primary)
- security@ubuntu.com (Secondary)
References for CVE-2023-31248
-
http://packetstormsecurity.com/files/173757/Kernel-Live-Patch-Security-Notice-LSN-0096-1.html
Kernel Live Patch Security Notice LSN-0096-1 ≈ Packet StormThird Party Advisory;VDB Entry
-
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/UPHI46ROSSLVAV4R5LJWJYU747JGOS6D/
[SECURITY] Fedora 38 Update: kernel-headers-6.4.4-200.fc38 - package-announce - Fedora Mailing-ListsMailing List
-
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/RGZC5XOANA75OJ4XARBBXYSLDKUIJI5E/
[SECURITY] Fedora 37 Update: kernel-tools-6.4.4-100.fc37 - package-announce - Fedora Mailing-ListsMailing List
-
http://www.openwall.com/lists/oss-security/2023/07/05/2
oss-security - CVE-2023-31248 - Linux kernel nf_tables UAF when using nft_chain_lookup_byidMailing List;Third Party Advisory
-
http://packetstormsecurity.com/files/174577/Kernel-Live-Patch-Security-Notice-LSN-0097-1.html
Kernel Live Patch Security Notice LSN-0097-1 ≈ Packet StormThird Party Advisory;VDB Entry
-
https://lists.debian.org/debian-lts-announce/2023/08/msg00001.html
[SECURITY] [DLA 3512-1] linux-5.10 security updateThird Party Advisory;VDB Entry
-
https://security.netapp.com/advisory/ntap-20240201-0001/
CVE-2023-31248 Linux Kernel Vulnerability in NetApp Products | NetApp Product Security
-
https://www.openwall.com/lists/oss-security/2023/07/05/2
oss-security - CVE-2023-31248 - Linux kernel nf_tables UAF when using nft_chain_lookup_byidMailing List
-
https://lore.kernel.org/netfilter-devel/20230705121627.GC19489@breakpoint.cc/T/
[PATCH] netfilter: nf_tables: do not ignore genmask when looking up chain by idPatch
-
https://www.debian.org/security/2023/dsa-5453
Debian -- Security Information -- DSA-5453-1 linuxThird Party Advisory
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