Bug 2070694 (CVE-2022-1199) - CVE-2022-1199 kernel: Null pointer dereference and use after free in ax25_release()
Summary: CVE-2022-1199 kernel: Null pointer dereference and use after free in ax25_rel...
Keywords:
Status: NEW
Alias: CVE-2022-1199
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Nobody
QA Contact:
URL:
Whiteboard:
Depends On: 2079085 2070695 2079079 2079080 2079081 2079083 2079084 2079086
Blocks: 2070696 2070697
TreeView+ depends on / blocked
 
Reported: 2022-03-31 16:58 UTC by Pedro Sampaio
Modified: 2023-09-19 14:13 UTC (History)
45 users (show)

Fixed In Version: kernel v 5.18-rc4
Doc Type: If docs needed, set a value
Doc Text:
A flaw was found in the Linux kernel. This flaw allows an attacker to crash the Linux kernel by simulating amateur radio from the user space, resulting in a null-ptr-deref vulnerability and a use-after-free vulnerability.
Clone Of:
Environment:
Last Closed:
Embargoed:

Attachments (Terms of Use)

Description Pedro Sampaio 2022-03-31 16:58:10 UTC 
There are null-ptr-deref vulnerability and use-after-free vulnerability that allow attacker to crash linux kernel by simulating Amateur Radio from user-space of linux.

Upstream fix:

https://github.com/torvalds/linux/commit/4e0f718daf97d47cf7dec122da1be970f145c809
https://github.com/torvalds/linux/commit/71171ac8eb34ce7fe6b3267dce27c313ab3cb3ac
https://github.com/torvalds/linux/commit/7ec02f5ac8a5be5a3f20611731243dc5e1d9ba10
Comment 1 Pedro Sampaio 2022-03-31 16:58:37 UTC 
Created kernel tracking bugs for this issue:

Affects: fedora-all [bug 2070695]
Comment 2 Justin M. Forbes 2022-03-31 21:46:33 UTC 
This was fixed for Fedora with the 5.16.15 stable kernel updates.
Comment 3 Salvatore Bonaccorso 2022-04-02 11:55:08 UTC 
https://www.openwall.com/lists/oss-security/2022/04/02/5
Note You need to log in before you can comment on or make changes to this bug.