CVE-2022-48770

2024-06-2012:15:14

Debian Security Bug Tracker

security-tracker.debian.org

cve-2022-48770

guarding

null

pt_regs

bpf_get_task_stack

unix

6.4 Medium

AI Score

Confidence

High

0.0004 Low

EPSS

Percentile

15.7%

JSON

In the Linux kernel, the following vulnerability has been resolved: bpf: Guard against accessing NULL pt_regs in bpf_get_task_stack() task_pt_regs() can return NULL on powerpc for kernel threads. This is then used in __bpf_get_stack() to check for user mode, resulting in a kernel oops. Guard against this by checking return value of task_pt_regs() before trying to obtain the call chain.

OSVersionArchitecturePackageVersionFilename
Debian12alllinux< 5.16.7-1linux_5.16.7-1_all.deb
Debian11alllinux< 5.10.103-1linux_5.10.103-1_all.deb
Debian10alllinux< 4.19.249-2linux_4.19.249-2_all.deb
Debian999alllinux< 5.16.7-1linux_5.16.7-1_all.deb
Debian13alllinux< 5.16.7-1linux_5.16.7-1_all.deb

OS	Version	Architecture	Package	Version	Filename
Debian	12	all	linux	< 5.16.7-1	linux_5.16.7-1_all.deb
Debian	11	all	linux	< 5.10.103-1	linux_5.10.103-1_all.deb
Debian	10	all	linux	< 4.19.249-2	linux_4.19.249-2_all.deb
Debian	999	all	linux	< 5.16.7-1	linux_5.16.7-1_all.deb
Debian	13	all	linux	< 5.16.7-1	linux_5.16.7-1_all.deb