CVE-2023-0461: Use-after-free vulnerability in the Linux Kernel
First published: Thu Feb 23 2023(Updated: )
A use-after-free flaw was found in the Linux kernel’s TLS protocol functionality in how a user installs a tls context (struct tls_context) on a connected TCP socket. This flaw allows a local user to crash or potentially escalate their privileges on the system.
Credit: cve-coordination@google.com cve-coordination@google.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| redhat/kernel-rt | <0:4.18.0-477.10.1.rt7.274.el8_8 | 0:4.18.0-477.10.1.rt7.274.el8_8 |
| redhat/kernel | <0:4.18.0-477.10.1.el8_8 | 0:4.18.0-477.10.1.el8_8 |
| redhat/kernel | <0:4.18.0-147.83.1.el8_1 | 0:4.18.0-147.83.1.el8_1 |
| redhat/kernel | <0:4.18.0-193.109.1.el8_2 | 0:4.18.0-193.109.1.el8_2 |
| redhat/kernel-rt | <0:4.18.0-193.109.1.rt13.160.el8_2 | 0:4.18.0-193.109.1.rt13.160.el8_2 |
| redhat/kernel-rt | <0:4.18.0-305.86.2.rt7.160.el8_4 | 0:4.18.0-305.86.2.rt7.160.el8_4 |
| redhat/kernel | <0:4.18.0-305.86.2.el8_4 | 0:4.18.0-305.86.2.el8_4 |
| redhat/kernel | <0:4.18.0-372.52.1.el8_6 | 0:4.18.0-372.52.1.el8_6 |
| redhat/kernel | <0:5.14.0-284.11.1.el9_2 | 0:5.14.0-284.11.1.el9_2 |
| redhat/kernel-rt | <0:5.14.0-284.11.1.rt14.296.el9_2 | 0:5.14.0-284.11.1.rt14.296.el9_2 |
| redhat/kernel | <0:5.14.0-70.58.1.el9_0 | 0:5.14.0-70.58.1.el9_0 |
| redhat/kernel-rt | <0:5.14.0-70.58.1.rt21.129.el9_0 | 0:5.14.0-70.58.1.rt21.129.el9_0 |
| Linux Linux kernel | >=4.13.0<4.14.303 | |
| Linux Linux kernel | >=4.19<4.19.270 | |
| Linux Linux kernel | >=5.4<5.4.229 | |
| Linux Linux kernel | >=5.10<5.10.163 | |
| Linux Linux kernel | >=5.15<5.15.88 | |
| Linux Linux kernel | >=6.0<6.0.19 | |
| Linux Linux kernel | >=6.1<6.1.5 | |
| Linux Linux kernel | =6.2-rc1 | |
| Linux Linux kernel | =6.2-rc2 | |
| redhat/kernel | <6.2 | 6.2 |
| debian/linux | 5.10.223-1 5.10.226-1 6.1.123-1 6.1.119-1 6.12.9-1 |
Remedy
To mitigate this issue, prevent module tls from being loaded. Please see https://access.redhat.com/solutions/41278 for how to blacklist a kernel module to prevent it from loading automatically.
Never miss a vulnerability like this again
Sign up to SecAlerts for real-time vulnerability data matched to your software, aggregated from hundreds of sources.
Reference Links
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=2c02d41d71f90a5168391b6a5f2954112ba2307c
- https://kernel.dance/#2c02d41d71f90a5168391b6a5f2954112ba2307c
- https://lists.debian.org/debian-lts-announce/2023/05/msg00005.html
- https://lists.debian.org/debian-lts-announce/2023/05/msg00006.html
- https://launchpad.net/bugs/cve/CVE-2023-0461
- https://www.cve.org/CVERecord?id=CVE-2023-0461 https://nvd.nist.gov/vuln/detail/CVE-2023-0461 https://github.com/torvalds/linux/commit/2c02d41d71f90a5168391b6a5f2954112ba2307c
- https://bugzilla.redhat.com/show_bug.cgi?id=2176192
- https://access.redhat.com/errata/RHSA-2023:2736
- https://access.redhat.com/errata/RHSA-2023:2951
- https://access.redhat.com/errata/RHSA-2023:3190
- https://access.redhat.com/errata/RHSA-2023:3191
- https://access.redhat.com/errata/RHSA-2023:4125
- https://access.redhat.com/errata/RHSA-2023:4126
- https://access.redhat.com/errata/RHSA-2023:4146
- https://access.redhat.com/errata/RHSA-2023:1556
- https://access.redhat.com/errata/RHSA-2023:1557
- https://access.redhat.com/errata/RHSA-2023:1662
- https://access.redhat.com/errata/RHSA-2023:1841
- https://access.redhat.com/errata/RHSA-2023:1923
- https://access.redhat.com/errata/RHSA-2023:2458
- https://access.redhat.com/errata/RHSA-2023:2148
- https://access.redhat.com/errata/RHSA-2023:3465
- https://access.redhat.com/errata/RHSA-2023:3470
- https://access.redhat.com/errata/RHSA-2023:3490
- https://access.redhat.com/errata/RHSA-2023:3491
- https://access.redhat.com/security/cve/cve-2023-0461
- https://github.com/torvalds/linux/commit/2c02d41d71f90a5168391b6a5f2954112ba2307c
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=2176815
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-0461
- https://nvd.nist.gov/vuln/detail/CVE-2023-0461
- https://security-tracker.debian.org/tracker/CVE-2023-0461
- https://ubuntu.com/security/CVE-2023-0461
- https://security.netapp.com/advisory/ntap-20230331-0006/
- https://git.kernel.org/linus/2c02d41d71f90a5168391b6a5f2954112ba2307c
Parent vulnerabilities
(Appears in the following advisories)
- collector/launchpad-cve
- collector/redhat-cve
- collector/nvd-index
- agent/type
- agent/author
- agent/weakness
- agent/severity
- agent/title
- collector/mitre-cve
- source/MITRE
- collector/redhat-bugzilla
- source/Red Hat
- alias/CVE-2023-0461
- agent/software-canonical-lookup
- collector/usn-cve
- source/Ubuntu
- collector/nvd-cve
- source/NVD
- agent/remedy
- agent/references
- agent/last-modified-date
- agent/description
- agent/first-publish-date
- agent/trending
- agent/tags
- agent/event
- collector/security-tracker-debian
- source/Debian
- agent/softwarecombine
- agent/source
- package-manager/redhat
- vendor/linux
- canonical/linux linux kernel
- version/linux linux kernel/4.13.0
- version/linux linux kernel/4.19
- version/linux linux kernel/5.4
- version/linux linux kernel/5.10
- version/linux linux kernel/5.15
- version/linux linux kernel/6.0
- version/linux linux kernel/6.1
- version/linux linux kernel/6.2-rc1
- version/linux linux kernel/6.2-rc2
- package-manager/debian