CVE-2026-90210
bpf: Fix UAF in bpf_trampoline_multi_attach_free on update failure
CVSS Score
0.0
EPSS Score
0.0%
EPSS Percentile
0th
In the Linux kernel, the following vulnerability has been resolved: bpf: Fix UAF in bpf_trampoline_multi_attach_free on update failure When bpf_trampoline_update() fails before modify_fentry_multi()/ unregister_fentry_multi() is called, cur_image is unchanged (cur_image == old_image) and ftrace still calls into it. Freeing old_image in that case causes a UAF. Only free old_image when it differs from cur_image.
| Vendor | linux |
| Product | linux |
| Ecosystems | |
| Industries | Technology |
| Published | Sep 17, 2026 |
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Affected Versions
Linux / Linux
aef4dfa790b22d8052cfb78044eadbe03c876c39 < 65c3939656fd7848e9274faa07c26748b5bf049c aef4dfa790b22d8052cfb78044eadbe03c876c39 < 0253073fb7d79a2dd2eae9581ea16db2aef395a6
Linux / Linux
7.2