CVE-2026-90177
bpf: Check pointer type for all atomic RMW paths
CVSS Score
7.8
EPSS Score
0.0%
EPSS Percentile
0th
In the Linux kernel, the following vulnerability has been resolved: bpf: Check pointer type for all atomic RMW paths Atomic RMW verification records an instruction pointer type only when the current destination is PTR_TO_ARENA. A second path can therefore reach the same instruction with an ordinary pointer without comparing it against the saved arena type. The post-verification fixup uses the saved type to rewrite the instruction to BPF_PROBE_ATOMIC for every path. Record the actual destination type for all atomic RMW paths so the existing mismatch check rejects incompatible uses of one instruction.
| Vendor | linux |
| Product | linux |
| Ecosystems | |
| Industries | Technology |
| Published | Sep 17, 2026 |
| Last Updated | Oct 21, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
Affected Versions
Linux / Linux
d503a04f8bc0c75dc9db9452d8cc79d748afb752 < b14dabe9656c1029abf3aa01e69c0d62f37f2f88 d503a04f8bc0c75dc9db9452d8cc79d748afb752 < d4ba9d888ac0a8f12c78071fff73e1205a0b9293 d503a04f8bc0c75dc9db9452d8cc79d748afb752 < eb287c6e81dedef92da01eb947f380d0aae513c3 d503a04f8bc0c75dc9db9452d8cc79d748afb752 < 4bc49ae344d65cfcef738f281ac575cf73ca2fc5
Linux / Linux
6.10
References
git.kernel.org: https://git.kernel.org/stable/c/b14dabe9656c1029abf3aa01e69c0d62f37f2f88 git.kernel.org: https://git.kernel.org/stable/c/d4ba9d888ac0a8f12c78071fff73e1205a0b9293 git.kernel.org: https://git.kernel.org/stable/c/eb287c6e81dedef92da01eb947f380d0aae513c3 git.kernel.org: https://git.kernel.org/stable/c/4bc49ae344d65cfcef738f281ac575cf73ca2fc5