DEBIAN-CVE-2022-48929
- Source
- https://security-tracker.debian.org/tracker/CVE-2022-48929
- Import Source
- https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2022-48929.json
- JSON Data
- https://api.test.osv.dev/v1/vulns/DEBIAN-CVE-2022-48929
- Upstream
- Published
- 2024-08-22T04:15:15.773Z
- Modified
- 2025-12-22T22:49:33.552876Z
- Severity
-
- 5.5 (Medium) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
- Summary
- [none]
- Details
-
In the Linux kernel, the following vulnerability has been resolved: bpf: Fix crash due to out of bounds access into reg2btfids. When commit e6ac2450d6de ("bpf: Support bpf program calling kernel function") added kfunc support, it defined reg2btfids as a cheap way to translate the verifier reg type to the appropriate btfvmlinux BTF ID, however commit c25b2ae13603 ("bpf: Replace PTRTOXXXORNULL with PTRTOXXX | PTRMAYBENULL") moved the _BPFREGTYPEMAX from the last member of bpfregtype enum to after the base register types, and defined other variants using type flag composition. However, now, the direct usage of reg->type to index into reg2btfids may no longer fall into _BPFREGTYPEMAX range, and hence lead to out of bounds access and kernel crash on dereference of bad pointer.
- References
Affected packages
Debian:12 / linux
Package
- Name
- linux
- Purl
- pkg:deb/debian/linux?arch=source
Debian:13 / linux
Package
- Name
- linux
- Purl
- pkg:deb/debian/linux?arch=source
Debian:14 / linux
Package
- Name
- linux
- Purl
- pkg:deb/debian/linux?arch=source