CVE-2026-92518

Unknown

Last modified

CVE-2026-92518 is a vulnerability of currently unknown severity. 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..

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.

Affected Software

Source: CNA advisory (CVE.org). NVD analysis pending.

VendorProductVersions
LinuxLinux>= 30a59cc79754fd9ff3f41b7ee2eb21da85988548, < 34b1bb33a025787e05f966e74de18cd36276f801; >= 30a59cc79754fd9ff3f41b7ee2eb21da85988548, < a6e11a81da3420fd37f1518d4f238c4d5784086e; >= 30a59cc79754fd9ff3f41b7ee2eb21da85988548, < 52fb1756ea1d2759dfef2d86245be00b05dac3a2; fe5b68fdcec0f3d97a32f4c4acfef59cf90718f7; >= 6.11.6, < 6.12
LinuxLinux6.12

References

Timeline

Published
Last Modified
Status
Received

Frequently Asked Questions

What is CVE-2026-92518?
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.
How severe is CVE-2026-92518?
Severity scoring for CVE-2026-92518 is pending analysis.
How do I fix CVE-2026-92518?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

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Source: NVD / NIST