Out-of-bounds Write Affecting kernel-tools-debuginfo package, versions <1:6.1.186-228.374.amzn2023


Severity

Recommended
0.0
high
0
10

Based on Amazon Linux security rating.

Threat Intelligence

EPSS
0.12% (3rd percentile)

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  • Snyk IDSNYK-AMZN2023-KERNELTOOLSDEBUGINFO-19818071
  • published15 Sept 2026
  • disclosed22 Aug 2026

Introduced: 22 Aug 2026

NewCVE-2026-74724  (opens in a new tab)
CWE-787  (opens in a new tab)

How to fix?

Upgrade Amazon-Linux:2023 kernel-tools-debuginfo to version 1:6.1.186-228.374.amzn2023 or higher.
This issue was patched in ALAS2023-2026-2143.

NVD Description

Note: Versions mentioned in the description apply only to the upstream kernel-tools-debuginfo package and not the kernel-tools-debuginfo package as distributed by Amazon-Linux. See How to fix? for Amazon-Linux:2023 relevant fixed versions and status.

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

ipvs: avoid out-of-bounds write in ip_vs_nat_icmp

Sashiko warns that local attacker can modify the packet while it is processed by IPVS. Some places read the IP ihl field multiple times which can cause out-of-bounds access. One such place is ip_vs_nat_icmp where we can write after the validated area.

Fix it by providing ciph argument just like it is done for IPv6 and use ciph->len as offset to the embedded transport header.

Modify some IPv4 header checks by reading the ihl field only once.

CVSS Base Scores

version 3.1