DEBIAN-CVE-2024-45020
- Source
- https://security-tracker.debian.org/tracker/DEBIAN-CVE-2024-45020
- Import Source
- https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2024-45020.json
- JSON Data
- https://api.test.osv.dev/v1/vulns/DEBIAN-CVE-2024-45020
- Upstream
- Published
- 2024-09-11T16:15:07Z
- Modified
- 2025-09-19T06:17:02Z
- Summary
- [none]
- Details
-
In the Linux kernel, the following vulnerability has been resolved: bpf: Fix a kernel verifier crash in stacksafe() Daniel Hodges reported a kernel verifier crash when playing with sched-ext. Further investigation shows that the crash is due to invalid memory access in stacksafe(). More specifically, it is the following code: if (exact != NOTEXACT && old->stack[spi].slottype[i % BPFREGSIZE] != cur->stack[spi].slottype[i % BPFREGSIZE]) return false; The 'i' iterates old->allocatedstack. If cur->allocatedstack < old->allocatedstack the out-of-bound access will happen. To fix the issue add 'i >= cur->allocatedstack' check such that if the condition is true, stacksafe() should fail. Otherwise, cur->stack[spi].slottype[i % BPFREGSIZE] memory access is legal.
- References
Affected packages
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