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CVE PROGRAM SOURCE RECORD7.8 High

CVE-2026-92518

riscv, bpf: Fix kernel stack corruption in tailcall with CFI

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Status
Published
Published
Updated
Assigning organization
Linux

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 products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

Linux Linux

Default version status: unaffected

  • 30a59cc79754fd9ff3f41b7ee2eb21da85988548 to < 34b1bb33a025787e05f966e74de18cd36276f801affected
  • 30a59cc79754fd9ff3f41b7ee2eb21da85988548 to < a6e11a81da3420fd37f1518d4f238c4d5784086eaffected
  • 30a59cc79754fd9ff3f41b7ee2eb21da85988548 to < 52fb1756ea1d2759dfef2d86245be00b05dac3a2affected
  • fe5b68fdcec0f3d97a32f4c4acfef59cf90718f7affected
  • 6.11.6 to < 6.12affected

Linux Linux

Default version status: affected

  • 6.12affected
  • 0 to < 6.12unaffected
  • 6.18.52 to ≤ 6.18.*unaffected
  • 7.2.6 to ≤ 7.2.*unaffected
  • 7.3 to ≤ *unaffected

References