Bug 2071047 (CVE-2022-1205) - CVE-2022-1205 kernel: Null pointer dereference and use after free in net/ax25/ax25_timer.c
Summary: CVE-2022-1205 kernel: Null pointer dereference and use after free in net/ax25...
Keywords:
Status: CLOSED NOTABUG
Alias: CVE-2022-1205
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
URL:
Whiteboard:
Depends On: 2071054
Blocks: 2071049 2071050
TreeView+ depends on / blocked
 
Reported: 2022-04-01 16:42 UTC by Pedro Sampaio
Modified: 2022-10-06 15:41 UTC (History)
49 users (show)

Fixed In Version:
Doc Type: If docs needed, set a value
Doc Text:
A NULL pointer dereference flaw was found in the Linux kernel’s Amateur Radio AX.25 protocol functionality. This flaw allows a local user to crash the system.
Clone Of:
Environment:
Last Closed: 2022-04-18 14:08:48 UTC
Embargoed:

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Description Pedro Sampaio 2022-04-01 16:42:37 UTC 
There are null pointer dereference and use-after-free vulnerabilities in net/ax25/ax25_timer.c of linux that allow attacker to crash linux kernel by simulating Amateur Radio from user-space.

Upstream fix:

https://github.com/torvalds/linux/commit/fc6d01ff9ef03b66d4a3a23b46fc3c3d8cf92009
https://github.com/torvalds/linux/commit/82e31755e55fbcea6a9dfaae5fe4860ade17cbc0
Comment 1 Pedro Sampaio 2022-04-01 16:49:02 UTC 
There are null pointer dereference and use-after-free vulnerabilities in net/ax25/ax25_timer.c of linux that allow attacker to crash linux kernel by simulating Amateur Radio from user-space.

Upstream fix:

https://github.com/torvalds/linux/commit/fc6d01ff9ef03b66d4a3a23b46fc3c3d8cf92009
https://github.com/torvalds/linux/commit/82e31755e55fbcea6a9dfaae5fe4860ade17cbc0
Comment 2 Pedro Sampaio 2022-04-01 16:49:56 UTC 
Created kernel tracking bugs for this issue:

Affects: fedora-all [bug 2071054]
Comment 3 Salvatore Bonaccorso 2022-04-02 11:55:24 UTC 
https://www.openwall.com/lists/oss-security/2022/04/02/4
Comment 6 Product Security DevOps Team 2022-04-18 14:08:43 UTC 
This bug is now closed. Further updates for individual products will be reflected on the CVE page(s):

https://access.redhat.com/security/cve/cve-2022-1205
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