CVE-2024-47739

medium

Description

In the Linux kernel, the following vulnerability has been resolved: padata: use integer wrap around to prevent deadlock on seq_nr overflow When submitting more than 2^32 padata objects to padata_do_serial, the current sorting implementation incorrectly sorts padata objects with overflowed seq_nr, causing them to be placed before existing objects in the reorder list. This leads to a deadlock in the serialization process as padata_find_next cannot match padata->seq_nr and pd->processed because the padata instance with overflowed seq_nr will be selected next. To fix this, we use an unsigned integer wrap around to correctly sort padata objects in scenarios with integer overflow.

References

https://git.kernel.org/stable/c/ab205e1c3846326f162180e56825b4ba38ce9c30

https://git.kernel.org/stable/c/9e279e6c1f012b82628b89e1b9c65dbefa8ca25a

https://git.kernel.org/stable/c/9a22b2812393d93d84358a760c347c21939029a6

https://git.kernel.org/stable/c/72164d5b648951684b1a593996b37a6083c61d7d

https://git.kernel.org/stable/c/46c4079460f4dcaf445860679558eedef4e1bc91

https://git.kernel.org/stable/c/1bd712de96ad7167fe0d608e706cd60587579f16

https://git.kernel.org/stable/c/1b8cf11b3ca593a8802a51802cd0c28c38501428

Details

Source: Mitre, NVD

Published: 2024-10-21

Updated: 2024-10-23

Risk Information

CVSS v2

Base Score: 4.6

Vector: CVSS2#AV:L/AC:L/Au:S/C:N/I:N/A:C

Severity: Medium

CVSS v3

Base Score: 5.5

Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Severity: Medium