CVE-2024-38662: bpf: Allow delete from sockmap/sockhash only if update is allowed
First published: Fri Jun 21 2024(Updated: )
In the Linux kernel, the following vulnerability has been resolved: bpf: Allow delete from sockmap/sockhash only if update is allowed We have seen an influx of syzkaller reports where a BPF program attached to a tracepoint triggers a locking rule violation by performing a map_delete on a sockmap/sockhash. We don't intend to support this artificial use scenario. Extend the existing verifier allowed-program-type check for updating sockmap/sockhash to also cover deleting from a map. From now on only BPF programs which were previously allowed to update sockmap/sockhash can delete from these map types.
Credit: 416baaa9-dc9f-4396-8d5f-8c081fb06d67 416baaa9-dc9f-4396-8d5f-8c081fb06d67
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Linux Linux kernel | >=5.10<5.10.219 | |
| Linux Linux kernel | >=5.15<5.15.161 | |
| Linux Linux kernel | >=6.1<6.1.93 | |
| Linux Linux kernel | >=6.6<6.6.33 | |
| Linux Linux kernel | >=6.9<6.9.4 | |
| Linux Linux kernel | =6.10.0-rc1 | |
| debian/linux | 5.10.223-1 5.10.226-1 6.1.115-1 6.1.119-1 6.11.10-1 6.12.5-1 |
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/000a65bf1dc04fb2b65e2abf116f0bc0fc2ee7b1
- https://git.kernel.org/stable/c/11e8ecc5b86037fec43d07b1c162e233e131b1d9
- https://git.kernel.org/stable/c/29467edc23818dc5a33042ffb4920b49b090e63d
- https://git.kernel.org/stable/c/6693b172f008846811f48a099f33effc26068e1e
- https://git.kernel.org/stable/c/98e948fb60d41447fd8d2d0c3b8637fc6b6dc26d
- https://git.kernel.org/stable/c/b81e1c5a3c70398cf76631ede63a03616ed1ba3c
- https://launchpad.net/bugs/cve/CVE-2024-38662
- https://git.kernel.org/linus/98e948fb60d41447fd8d2d0c3b8637fc6b6dc26d
- https://security-tracker.debian.org/tracker/CVE-2024-38662
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2024-38662
- https://nvd.nist.gov/vuln/detail/CVE-2024-38662
- https://ubuntu.com/security/CVE-2024-38662
- agent/title
- agent/type
- collector/nvd-api
- source/NVD
- agent/software-canonical-lookup
- agent/severity
- collector/launchpad-cve
- source/Launchpad
- agent/author
- agent/remedy
- agent/first-publish-date
- agent/references
- collector/usn-cve
- source/Ubuntu
- agent/description
- agent/tags
- agent/event
- collector/nvd-cve
- collector/security-tracker-debian
- source/Debian
- agent/softwarecombine
- collector/mitre-cve
- source/MITRE
- agent/last-modified-date
- agent/trending
- vendor/linux
- canonical/linux linux kernel
- version/linux linux kernel/5.10
- version/linux linux kernel/5.15
- version/linux linux kernel/6.1
- version/linux linux kernel/6.6
- version/linux linux kernel/6.9
- version/linux linux kernel/6.10.0-rc1
- package-manager/debian