Vulnerability details
CVE-2026-92518
Linux Linux
riscv, bpf: Fix kernel stack corruption in tailcall with CFI
CVSS 3.1
7.8High
Official description
In the Linux kernel, the following vulnerability has been resolved: riscv, bpf: Fix kernel stack corruption in tailcall with CFI When CONFIG_CFI_CLANG is enabled, prog->bpf_func already skips the kcfi instruction during setup. Including it again in the tailcall jump offset causes it to jump over an extra 4 bytes, skipping the stack pointer adjustment, which will result in kernel stack corruption.
CVSS scores
| Score | Version | Source | Vector |
|---|---|---|---|
| 7.8High | 3.1 | CVEProject cvelistV5 (CNA) (Linux) | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
Affected products
| Vendor | Product | Versions | Source |
|---|---|---|---|
| Linux | Linux | 6.12 | CVEProject cvelistV5 (CNA) |
| Linux | Linux | fe5b68fdcec0f3d97a32f4c4acfef59cf90718f7 | CVEProject cvelistV5 (CNA) |
| Linux | Linux | 30a59cc79754fd9ff3f41b7ee2eb21da85988548 ≤ v < 34b1bb33a025787e05f966e74de18cd36276f801 | CVEProject cvelistV5 (CNA) |
| Linux | Linux | 30a59cc79754fd9ff3f41b7ee2eb21da85988548 ≤ v < a6e11a81da3420fd37f1518d4f238c4d5784086e | CVEProject cvelistV5 (CNA) |
| Linux | Linux | 30a59cc79754fd9ff3f41b7ee2eb21da85988548 ≤ v < 52fb1756ea1d2759dfef2d86245be00b05dac3a2 | CVEProject cvelistV5 (CNA) |
| Linux | Linux | 6.11.6 ≤ v < 6.12 | CVEProject cvelistV5 (CNA) |
References and advisories
3
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Details
- Published
- 2026-09-17
- Last updated
- 2026-10-19
- State
- Published
- Assigner (CNA)
- Linux
Exploit prediction (EPSS)
0.17%
Probability of exploitation in 30 days
6.7%
Percentile (among all CVEs)
Weaknesses (CWE)
- —