https://vulnerability.circl.lu/rss/recent/all/10 Most recent entries from all 2026-09-29T08:46:51.518634+00:00 Vulnerability-Lookup info@circl.lu python-feedgen Contains only the most 10 recent entries. https://vulnerability.circl.lu/vuln/cve-2026-90210 CVE-2026-90210 — bpf: Fix UAF in bpf_trampoline_multi_attach_free on update failure 2026-09-29T08:46:51.540202+00:00

Affected: Linux

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.