CVE-2024-35909

Technical Description

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

net: wwan: t7xx: Split 64bit accesses to fix alignment issues

Some of the registers are aligned on a 32bit boundary, causing

alignment faults on 64bit platforms.

Unable to handle kernel paging request at virtual address ffffffc084a1d004

Mem abort info:

ESR = 0x0000000096000061

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

SET = 0, FnV = 0

EA = 0, S1PTW = 0

FSC = 0x21: alignment fault

Data abort info:

ISV = 0, ISS = 0x00000061, ISS2 = 0x00000000

CM = 0, WnR = 1, TnD = 0, TagAccess = 0

GCS = 0, Overlay = 0, DirtyBit = 0, Xs = 0

swapper pgtable: 4k pages, 39-bit VAs, pgdp=0000000046ad6000

[ffffffc084a1d004] pgd=100000013ffff003, p4d=100000013ffff003, pud=100000013ffff003, pmd=0068000020a00711

Internal error: Oops: 0000000096000061 [#1] SMP

Modules linked in: mtk_t7xx(+) qcserial pppoe ppp_async option nft_fib_inet nf_flow_table_inet mt7921u(O) mt7921s(O) mt7921e(O) mt7921_common(O) iwlmvm(O) iwldvm(O) usb_w

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