CVE-2026-89799
7.8
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Summary
In the Linux kernel, the following vulnerability has been resolved:
bpf: Disable preemption in bpf_get_stackid
The get_perf_callchain call needs disabled preemption plus we need it disabled as long as we access its returned trace entries buffer.
Note the bpf_get_stackid_pe function is executed already with preemption disabled.
Affected Software
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| Linux | Linux | d5a3b1f691865be576c2bffa708549b8cdccda19 < ccf481d73bce6e851cec364fe831c86fe66877cf | affected |
| Linux | Linux | d5a3b1f691865be576c2bffa708549b8cdccda19 < c4efdc1d4cb3e9183e41a1b2a5e0901dbbb31cdf | affected |
| Linux | Linux | d5a3b1f691865be576c2bffa708549b8cdccda19 < 15f1bd8574662f1b7b26aaa2e23ebf4066f0117d | affected |
| Linux | Linux | 4.6 | affected |
| Linux | Linux | 0 < 4.6 | unaffected |
| Linux | Linux | 6.18.51 <= 6.18.* | unaffected |
| Linux | Linux | 7.2.5 <= 7.2.* | unaffected |
| Linux | Linux | 7.3-rc1 <= * | unaffected |
Weaknesses
References
- https://git.kernel.org/stable/c/ccf481d73bce6e851cec364fe831c86fe66877cf
- https://git.kernel.org/stable/c/c4efdc1d4cb3e9183e41a1b2a5e0901dbbb31cdf
- https://git.kernel.org/stable/c/15f1bd8574662f1b7b26aaa2e23ebf4066f0117d
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