CVE-2021-46911

2024-02-2707:15:07

416baaa9-dc9f-4396-8d5f-8c081fb06d67

web.nvd.nist.gov

390

cve-2021-46911

linux kernel

vulnerability

ch_ktls

kernel panic

5.5 Medium

CVSS3

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

5.2 Medium

AI Score

Confidence

High

0.0004 Low

EPSS

Percentile

5.1%

JSON

In the Linux kernel, the following vulnerability has been resolved:

ch_ktls: Fix kernel panic

Taking page refcount is not ideal and causes kernel panic
sometimes. It’s better to take tx_ctx lock for the complete
skb transmit, to avoid page cleanup if ACK received in middle.

Affected configurations

Vulners

NVD

Node

linuxlinux_kernelRange5.7–5.10.32

linuxlinux_kernelRange5.11.0–5.11.16

linuxlinux_kernelRange5.12.0≥

VendorProductVersionCPE
linuxlinux_kernel*cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
linuxlinux_kernel*cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
linuxlinux_kernel*cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*

Vendor	Product	Version	CPE
linux	linux_kernel	*	cpe:2.3:o:linux:linux_kernel::::::::
linux	linux_kernel	*	cpe:2.3:o:linux:linux_kernel::::::::
linux	linux_kernel	*	cpe:2.3:o:linux:linux_kernel::::::::

CNA Affected

[
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "unaffected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "drivers/net/ethernet/chelsio/inline_crypto/ch_ktls/chcr_ktls.c"
    ],
    "versions": [
      {
        "version": "5a4b9fe7fece",
        "lessThan": "8d5a9dbd2116",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "5a4b9fe7fece",
        "lessThan": "8348665d4181",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "5a4b9fe7fece",
        "lessThan": "1a73e427b824",
        "status": "affected",
        "versionType": "git"
      }
    ]
  },
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "affected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "drivers/net/ethernet/chelsio/inline_crypto/ch_ktls/chcr_ktls.c"
    ],
    "versions": [
      {
        "version": "5.7",
        "status": "affected"
      },
      {
        "version": "0",
        "lessThan": "5.7",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "5.10.32",
        "lessThanOrEqual": "5.10.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "5.11.16",
        "lessThanOrEqual": "5.11.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "5.12",
        "lessThanOrEqual": "*",
        "status": "unaffected",
        "versionType": "original_commit_for_fix"
      }
    ]
  }
]