First published: Fri Jul 12 2024(Updated: )
In the Linux kernel, the following vulnerability has been resolved: bpf: Fix a potential use-after-free in bpf_link_free() After commit 1a80dbcb2dba, bpf_link can be freed by link->ops->dealloc_deferred, but the code still tests and uses link->ops->dealloc afterward, which leads to a use-after-free as reported by syzbot. Actually, one of them should be sufficient, so just call one of them instead of both. Also add a WARN_ON() in case of any problematic implementation.
Credit: 416baaa9-dc9f-4396-8d5f-8c081fb06d67 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Affected Software | Affected Version | How to fix |
---|---|---|
Linux Linux kernel | >=6.6.26<6.6.35 | |
Linux Linux kernel | >=6.9<6.9.6 | |
Linux Linux kernel | =6.10-rc1 | |
Linux Linux kernel | =6.10-rc2 | |
debian/linux | 5.10.223-1 5.10.226-1 6.1.106-3 6.1.112-1 6.11.5-1 6.11.6-1 |
Sign up to SecAlerts for real-time vulnerability data matched to your software, aggregated from hundreds of sources.