CVE-2022-49026

HIGH EPSS 14.6%
Published Oct 21, 20241y ago · Modified Jun 17, 20262w ago
7.8 CVSS 3.1
High
Find Similar
Published Oct 21, 2024 1y ago
Last Modified Jun 17, 2026 2w ago

Description

In the Linux kernel, the following vulnerability has been resolved: e100: Fix possible use after free in e100_xmit_prepare In e100_xmit_prepare(), if we can't map the skb, then return -ENOMEM, so e100_xmit_frame() will return NETDEV_TX_BUSY and the upper layer will resend the skb. But the skb is already freed, which will cause UAF bug when the upper layer resends the skb. Remove the harmful free.

CVSS Details

Base Score
7.8
Exploitability
1.8
Impact
5.9
Vector string
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack Vector Local
Attack Complexity Low
Privileges Required Low
User Interaction None
Scope Unchanged
Confidentiality High
Integrity High
Availability High

Threat Intelligence

EPSS Exploit Probability
14.6% percentile
Exploit & Patch Status
No Known Exploit
Patch Available

Weaknesses 1

CWE-416 Use After Free Memory Safety

Affected Products 10

VendorProductVersionRange
linuxlinux_kernel*≥4.3  –  <5.10.158
linuxlinux_kernel*≥5.11  –  <5.15.82
linuxlinux_kernel*≥5.16  –  <6.0.12
linuxlinux_kernel6.1any
linuxlinux_kernel6.1any
linuxlinux_kernel6.1any
linuxlinux_kernel6.1any
linuxlinux_kernel6.1any
linuxlinux_kernel6.1any
linuxlinux_kernel6.1any

References 4

  • git.kernel.org https://git.kernel.org/stable/c/45605c75c52c7ae7bfe902214343aabcfe5ba0ff
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/9fc27d22cdb9b1fcd754599d216a8992fed280cd
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/b46f6144ab89d3d757ead940759c505091626a7d
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/b775f37d943966f6f77dca402f5a9dedce502c25
    Patch

Remediation

  • git.kernel.org https://git.kernel.org/stable/c/45605c75c52c7ae7bfe902214343aabcfe5ba0ff
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/9fc27d22cdb9b1fcd754599d216a8992fed280cd
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/b46f6144ab89d3d757ead940759c505091626a7d
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/b775f37d943966f6f77dca402f5a9dedce502c25
    Patch