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CVE-2026-92518 riscv, bpf: Fix kernel stack corruption in tailcall with CFI

🗓️ 17 Sep 2026 16:10:26Reported by LinuxType 
cvelist
 cvelist
🔗 www.cve.org👁 51 Views

Linux kernel RISC-V BPF tailcall with CONFIG_CFI_CLANG causes kernel stack corruption.

Related
Affected
Refs
[
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "unaffected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "arch/riscv/net/bpf_jit_comp64.c"
    ],
    "versions": [
      {
        "version": "30a59cc79754fd9ff3f41b7ee2eb21da85988548",
        "lessThan": "34b1bb33a025787e05f966e74de18cd36276f801",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "30a59cc79754fd9ff3f41b7ee2eb21da85988548",
        "lessThan": "a6e11a81da3420fd37f1518d4f238c4d5784086e",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "30a59cc79754fd9ff3f41b7ee2eb21da85988548",
        "lessThan": "52fb1756ea1d2759dfef2d86245be00b05dac3a2",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "fe5b68fdcec0f3d97a32f4c4acfef59cf90718f7",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "6.11.6",
        "lessThan": "6.12",
        "status": "affected",
        "versionType": "semver"
      }
    ]
  },
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "affected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "arch/riscv/net/bpf_jit_comp64.c"
    ],
    "versions": [
      {
        "version": "6.12",
        "status": "affected"
      },
      {
        "version": "0",
        "lessThan": "6.12",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.18.52",
        "lessThanOrEqual": "6.18.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "7.2.6",
        "lessThanOrEqual": "7.2.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "7.3",
        "lessThanOrEqual": "*",
        "status": "unaffected",
        "versionType": "original_commit_for_fix"
      }
    ]
  }
]

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19 Oct 2026 09:04Current
CVSS 3.17.8
EPSS0.00173
51