CVE-2024-54031

Technical Description

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

netfilter: nft_set_hash: unaligned atomic read on struct nft_set_ext

Access to genmask field in struct nft_set_ext results in unaligned

atomic read:

[ 72.130109] Unable to handle kernel paging request at virtual address ffff0000c2bb708c

[ 72.131036] Mem abort info:

[ 72.131213] ESR = 0x0000000096000021

[ 72.131446] EC = 0x25: DABT (current EL), IL = 32 bits

[ 72.132209] SET = 0, FnV = 0

[ 72.133216] EA = 0, S1PTW = 0

[ 72.134080] FSC = 0x21: alignment fault

[ 72.135593] Data abort info:

[ 72.137194] ISV = 0, ISS = 0x00000021, ISS2 = 0x00000000

[ 72.142351] CM = 0, WnR = 0, TnD = 0, TagAccess = 0

[ 72.145989] GCS = 0, Overlay = 0, DirtyBit = 0, Xs = 0

[ 72.150115] swapper pgtable: 4k pages, 48-bit VAs, pgdp=0000000237d27000

[ 72.154893] [ffff0000c2bb708c] pgd=0000000000000000, p4d=180000023ffff403, pud=180000023f84b403, pmd=180000023f835403,

+pte=0068000102bb7707

[ 72.16302

Remediation

Check the references section for vendor advisories and patches from linux. Update linux_kernel to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

Affected Products

References