CVE-2026-45932
7.3
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:H
Summary
In the Linux kernel, the following vulnerability has been resolved:
bpf: Fix tcx/netkit detach permissions when prog fd isn't given
This commit fixes a security issue where BPF_PROG_DETACH on tcx or netkit devices could be executed by any user when no program fd was provided, bypassing permission checks. The fix adds a capability check for CAP_NET_ADMIN or CAP_SYS_ADMIN in this case.
Affected Software
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| Linux | Linux | e420bed025071a623d2720a92bc2245c84757ecb < 4e0772cded109c238411f2fac36ac39302758b81 | affected |
| Linux | Linux | e420bed025071a623d2720a92bc2245c84757ecb < 3f04cc1e5374da4c5e791ae010a06cfea7bacbe6 | affected |
| Linux | Linux | e420bed025071a623d2720a92bc2245c84757ecb < ae23bc81ddf7c17b663c4ed1b21e35527b0a7131 | affected |
| Linux | Linux | 6.6 | affected |
| Linux | Linux | 0 < 6.6 | unaffected |
| Linux | Linux | 6.18.14 <= 6.18.* | unaffected |
| Linux | Linux | 6.19.4 <= 6.19.* | unaffected |
| Linux | Linux | 7.0 <= * | unaffected |
Weaknesses
References
- https://git.kernel.org/stable/c/4e0772cded109c238411f2fac36ac39302758b81
- https://git.kernel.org/stable/c/3f04cc1e5374da4c5e791ae010a06cfea7bacbe6
- https://git.kernel.org/stable/c/ae23bc81ddf7c17b663c4ed1b21e35527b0a7131
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