CVE-2023-4147: Fixes in Linux Kernel
First published: Mon Jul 24 2023(Updated: )
A flaw in the Linux Kernel found. For the netfilter, nf_tables_newrule when adding a rule with NFTA_RULE_CHAIN_ID can lead to use-after-free. Reference: <a href="https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=0ebc1064e4874d5987722a2ddbc18f94aa53b211">https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=0ebc1064e4874d5987722a2ddbc18f94aa53b211</a>
Credit: secalert@redhat.com secalert@redhat.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Linux Linux kernel | <6.5 | |
| Linux Linux kernel | =6.5-rc1 | |
| Linux Linux kernel | =6.5-rc2 | |
| Linux Linux kernel | =6.5-rc3 | |
| Fedoraproject Fedora | =38 | |
| Redhat Enterprise Linux | =9.0 | |
| debian/linux | 4.19.249-2 4.19.289-2 5.10.197-1 5.10.205-2 6.1.66-1 6.1.69-1 6.5.13-1 6.6.9-1 | |
| debian/linux-5.10 | 5.10.197-1~deb10u1 | |
| redhat/Kernel | <6.5 | 6.5 |
| Linux Linux kernel | >=5.9<5.10.190 | |
| Linux Linux kernel | >=5.11<5.15.124 | |
| Linux Linux kernel | >=5.16<6.1.43 | |
| Linux Linux kernel | >=6.2<6.4.8 | |
| Redhat Enterprise Linux Eus | =9.2 | |
| Redhat Enterprise Linux For Real Time | =9.0 | |
| Redhat Enterprise Linux For Real Time For Nfv | =9.0 | |
| Redhat Enterprise Linux Server Aus | =9.2 | |
| Debian Debian Linux | =10.0 | |
| Debian Debian Linux | =11.0 | |
| Debian Debian Linux | =12.0 |
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Reference Links
- https://access.redhat.com/errata/RHSA-2023:5069
- https://access.redhat.com/errata/RHSA-2023:5091
- https://access.redhat.com/errata/RHSA-2023:5093
- https://access.redhat.com/security/cve/CVE-2023-4147
- https://bugzilla.redhat.com/show_bug.cgi?id=2225239
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=0ebc1064e4874d5987722a2ddbc18f94aa53b211
- https://lists.debian.org/debian-lts-announce/2023/10/msg00027.html
- https://security.netapp.com/advisory/ntap-20231020-0006/
- https://www.debian.org/security/2023/dsa-5480
- https://www.debian.org/security/2023/dsa-5492
- https://www.spinics.net/lists/stable/msg671573.html
- https://access.redhat.com/errata/RHSA-2023:7382
- https://access.redhat.com/errata/RHSA-2023:7389
- https://access.redhat.com/errata/RHSA-2023:7411
- https://git.kernel.org/linus/0ebc1064e4874d5987722a2ddbc18f94aa53b211
- https://security-tracker.debian.org/tracker/CVE-2023-4147
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=2225239#c0
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=2225239#c8
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=2229467
- https://chromereleases.googleblog.com/2023/08/stable-channel-update-for-chromeos_25.html (Advisory)
Peer vulnerabilities
(Found alongside the following vulnerabilities)
- CVE-2023-4369
- CVE-2023-20593
- CVE-2023-4211
- CVE-2023-4128
- CVE-2023-3390
- CVE-2023-32804
- CVE-2022-40982
- CVE-2023-2312
- CVE-2023-4349
- CVE-2023-4350
- CVE-2023-4351
- CVE-2023-4352
- CVE-2023-4353
- CVE-2023-4354
- CVE-2023-4355
- CVE-2023-4356
- CVE-2023-4357
- CVE-2023-4358
- CVE-2023-4359
- CVE-2023-4360
- CVE-2023-4361
- CVE-2023-4362
- CVE-2023-4363
- CVE-2023-4364
- CVE-2023-4365
- CVE-2023-4366
- CVE-2023-4367
- CVE-2023-4368
- CVE-2023-21264
- CVE-2020-29374
Frequently Asked Questions
What is CVE-2023-4147?
CVE-2023-4147 is a use-after-free flaw found in the Linux kernel's Netfilter functionality when adding a rule with NFTA_RULE_CHAIN_ID.
How does CVE-2023-4147 impact the system?
CVE-2023-4147 allows a local user to crash or escalate their privileges on the system.
What is the severity of CVE-2023-4147?
CVE-2023-4147 has a severity rating of 7.8 (High).
Which software are affected by CVE-2023-4147?
Linux kernel versions 6.5 and earlier, Fedora 38, and Redhat Enterprise Linux 9.0 are affected by CVE-2023-4147.
How do I fix CVE-2023-4147?
Apply the recommended patches and updates provided by the respective vendors to mitigate CVE-2023-4147.
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