CVE-2024-40909
HIGH
MEDIUM
Priority: 0.02
BB Relevance:
41/100
Published: 2024-07-12
Modified: 2026-10-30
First seen: 2026-10-30
Status: active
Attack Surface
Low Complexity
No Interaction
Conf. Impact
Integ. Impact
CVSS Vector Breakdown
AV:
Local
AC:
Low
PR:
Low
UI:
None
S:
Unchanged
C:
High
I:
High
A:
High
Description
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.
Weakness Classification (1)
Affected Software (11)
| Vendor | Product | Version |
|---|---|---|
| Linux | Linux | ac48dc6ac9240f73bf08d29edf65c2deca93ee5d < e8ccda39b395169622855607085cdeef4d376e0f |
| Linux | Linux | 876941f533e7b47fc69977fc4551c02f2d18af97 < 91cff53136daeff50816b0baeafd38a6976f6209 |
| Linux | Linux | 1a80dbcb2dbaf6e4c216e62e30fa7d3daa8001ce < fa97b8fed9896f1e89cb657513e483a152d4c382 |
| Linux | Linux | 1a80dbcb2dbaf6e4c216e62e30fa7d3daa8001ce < 2884dc7d08d98a89d8d65121524bb7533183a63a |
| Linux | Linux | 5d8d447777564b35f67000e7838e7ccb64d525c8 |
| Linux | Linux | 6.6.26 < 6.6.35 |
| Linux | Linux | 6.8.5 < 6.9 |
| Linux | Linux | 6.9 |
| linux | linux_kernel | 6.6.26 – 6.6.35 |
| linux | linux_kernel | 6.10 |
| linux | linux_kernel | 6.10 |