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Amazon Linux AMI: CVE-2023-52628: Security patch for kernel (ALAS-2024-1937)

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Amazon Linux AMI: CVE-2023-52628: Security patch for kernel (ALAS-2024-1937)

Severity
4
CVSS
(AV:L/AC:M/Au:N/C:P/I:P/A:P)
Published
03/28/2024
Created
05/22/2024
Added
05/14/2024
Modified
05/14/2024

Description

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

netfilter: nftables: exthdr: fix 4-byte stack OOB write

If priv->len is a multiple of 4, then dst[len / 4] can write past

the destination array which leads to stack corruption.

This construct is necessary to clean the remainder of the register

in case ->len is NOT a multiple of the register size, so make it

conditional just like nft_payload.c does.

The bug was added in 4.1 cycle and then copied/inherited when

tcp/sctp and ip option support was added.

Bug reported by Zero Day Initiative project (ZDI-CAN-21950,

ZDI-CAN-21951, ZDI-CAN-21961).

Solution(s)

  • amazon-linux-upgrade-kernel

References

  • ALAS-2024-1937
  • CVE-2023-52628

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