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Amazon Linux AMI: CVE-2023-34256: Security patch for kernel (ALAS-2023-1773)

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Amazon Linux AMI: CVE-2023-34256: Security patch for kernel (ALAS-2023-1773)

Severity
4
CVSS
(AV:L/AC:M/Au:N/C:P/I:P/A:P)
Published
05/31/2023
Created
07/05/2023
Added
07/04/2023
Modified
02/06/2024

Description

An issue was discovered in the Linux kernel before 6.3.3. There is an out-of-bounds read in crc16 in lib/crc16.c when called from fs/ext4/super.c because ext4_group_desc_csum does not properly check an offset. NOTE: this is disputed by third parties because the kernel is not intended to defend against attackers with the stated "When modifying the block device while it is mounted by the filesystem" access.

Solution(s)

  • amazon-linux-upgrade-kernel

References

  • ALAS-2023-1773
  • CVE-2023-34256

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