CVE-2023-52621: bpf: Check rcu_read_lock_trace_held() before calling bpf map helpers
First published: Tue Mar 26 2024(Updated: )
In the Linux kernel, the following vulnerability has been resolved: bpf: Check rcu_read_lock_trace_held() before calling bpf map helpers The Linux kernel CVE team has assigned <a href="https://access.redhat.com/security/cve/CVE-2023-52621">CVE-2023-52621</a> to this issue. Upstream advisory: <a href="https://lore.kernel.org/linux-cve-announce/20240326171931.1354035-4-lee@kernel.org/T">https://lore.kernel.org/linux-cve-announce/20240326171931.1354035-4-lee@kernel.org/T</a>
Credit: 416baaa9-dc9f-4396-8d5f-8c081fb06d67 416baaa9-dc9f-4396-8d5f-8c081fb06d67
| Affected Software | Affected Version | How to fix |
|---|---|---|
| redhat/kernel | <6.1.77 | 6.1.77 |
| redhat/kernel | <6.6.16 | 6.6.16 |
| redhat/kernel | <6.7.4 | 6.7.4 |
| redhat/kernel | <6.8 | 6.8 |
| debian/linux | <=5.10.223-1<=5.10.226-1 | 6.1.123-1 6.1.128-1 6.12.12-1 6.12.15-1 |
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/stable/c/169410eba271afc9f0fb476d996795aa26770c6d
- https://git.kernel.org/stable/c/483cb92334cd7f1d5387dccc0ab5d595d27a669d
- https://git.kernel.org/stable/c/c7f1b6146f4a46d727c0d046284c28b6882c6304
- https://git.kernel.org/stable/c/d6d6fe4bb105595118f12abeed4a7bdd450853f3
- https://launchpad.net/bugs/cve/CVE-2023-52621
- https://access.redhat.com/security/cve/CVE-2023-52621
- https://lore.kernel.org/linux-cve-announce/20240326171931.1354035-4-lee@kernel.org/T
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=2271691
- https://access.redhat.com/errata/RHSA-2024:9315
- https://bugzilla.redhat.com/show_bug.cgi?id=2271690
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-52621
- https://nvd.nist.gov/vuln/detail/CVE-2023-52621
- https://security-tracker.debian.org/tracker/CVE-2023-52621
- https://ubuntu.com/security/CVE-2023-52621
- https://git.kernel.org/linus/169410eba271afc9f0fb476d996795aa26770c6d
Frequently Asked Questions
What is the severity of CVE-2023-52621?
The severity of CVE-2023-52621 is classified as moderate.
How do I fix CVE-2023-52621?
To fix CVE-2023-52621, update the Linux kernel to versions 6.1.77, 6.6.16, 6.7.4, 6.8, or newer versions as specified.
Which systems are affected by CVE-2023-52621?
CVE-2023-52621 affects specific versions of the Linux kernel, including those maintained by Red Hat and Debian.
Is there an exploit for CVE-2023-52621?
As of now, there are no known public exploits specifically targeting CVE-2023-52621.
What components of the Linux kernel are impacted by CVE-2023-52621?
CVE-2023-52621 impacts the BPF (Berkeley Packet Filter) functionality related to rcu_read_lock_trace_held() calls.
- agent/title
- agent/type
- collector/nvd-api
- source/NVD
- collector/launchpad-cve
- source/Launchpad
- agent/first-publish-date
- agent/author
- agent/remedy
- collector/redhat-bugzilla
- source/Red Hat
- alias/CVE-2023-52621
- agent/software-canonical-lookup
- collector/nvd-cve
- collector/mitre-cve
- source/MITRE
- agent/severity
- agent/last-modified-date
- agent/references
- agent/trending
- agent/description
- agent/event
- agent/softwarecombine
- agent/source
- agent/tags
- collector/usn-cve
- source/Ubuntu
- collector/security-tracker-debian
- source/Debian
- package-manager/redhat
- package-manager/debian