Description
In the Linux kernel, the following vulnerability has been resolved: perf: Revert to requiring CAP_SYS_ADMIN for uprobes Jann reports that uprobes can be used destructively when used in the middle of an instruction. The kernel only verifies there is a valid instruction at the requested offset, but due to variable instruction length cannot determine if this is an instruction as seen by the intended execution stream. Additionally, Mark Rutland notes that on architectures that mix data in the text segment (like arm64), a similar things can be done if the data word is 'mistaken' for an instruction. As such, require CAP_SYS_ADMIN for uprobes.
Affected products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
Linux Linux
Default version status: unaffected
c9e0924e5c2b59365f9c0d43ff8722e79ecf4088 to < d7ef1afd5b3f43f4924326164cee5397b66abd9caffectedc9e0924e5c2b59365f9c0d43ff8722e79ecf4088 to < c0aec35f861fa746ca45aa816161c74352e6ada8affectedc9e0924e5c2b59365f9c0d43ff8722e79ecf4088 to < 8e8bf7bc6aa6f583336c2fda280b6cea0aed5612affectedc9e0924e5c2b59365f9c0d43ff8722e79ecf4088 to < 183bdb89af1b5193b1d1d9316986053b15ca6fa4affectedc9e0924e5c2b59365f9c0d43ff8722e79ecf4088 to < a0a8009083e569b5526c64f7d3f2a62baca95164affectedc9e0924e5c2b59365f9c0d43ff8722e79ecf4088 to < d5074256b642cdeb46a70ce2f15193e766edca68affectedc9e0924e5c2b59365f9c0d43ff8722e79ecf4088 to < ba677dbe77af5ffe6204e0f3f547f3ba059c6302affected
Linux Linux
Default version status: affected
5.8affected0 to < 5.8unaffected5.10.240 to ≤ 5.10.*unaffected5.15.189 to ≤ 5.15.*unaffected6.1.146 to ≤ 6.1.*unaffected6.6.99 to ≤ 6.6.*unaffected6.12.39 to ≤ 6.12.*unaffected6.15.7 to ≤ 6.15.*unaffected6.16 to ≤ *unaffected
References
- https://git.kernel.org/stable/c/d7ef1afd5b3f43f4924326164cee5397b66abd9c ↗
- https://git.kernel.org/stable/c/c0aec35f861fa746ca45aa816161c74352e6ada8 ↗
- https://git.kernel.org/stable/c/8e8bf7bc6aa6f583336c2fda280b6cea0aed5612 ↗
- https://git.kernel.org/stable/c/183bdb89af1b5193b1d1d9316986053b15ca6fa4 ↗
- https://git.kernel.org/stable/c/a0a8009083e569b5526c64f7d3f2a62baca95164 ↗
- https://git.kernel.org/stable/c/d5074256b642cdeb46a70ce2f15193e766edca68 ↗
- https://git.kernel.org/stable/c/ba677dbe77af5ffe6204e0f3f547f3ba059c6302 ↗
- https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html ↗
- https://lists.debian.org/debian-lts-announce/2025/10/msg00007.html ↗
- https://cert-portal.siemens.com/productcert/html/ssa-082556.html ↗