Bug 2071051 (CVE-2022-1204) - CVE-2022-1204 kernel: Use after free in net/ax25/af_ax25.c
Summary: CVE-2022-1204 kernel: Use after free in net/ax25/af_ax25.c
Keywords:
Status: CLOSED NOTABUG
Alias: CVE-2022-1204
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: 2071052
Blocks: 2071053 2071055
TreeView+ depends on / blocked
 
Reported: 2022-04-01 16:48 UTC by Pedro Sampaio
Modified: 2022-04-18 19:52 UTC (History)
49 users (show)

Fixed In Version:
Doc Type: If docs needed, set a value
Doc Text:
A use-after-free flaw was found in the Linux kernel’s Amateur Radio AX.25 protocol functionality in the way a user connects with the protocol. This flaw allows a local user to crash the system.
Clone Of:
Environment:
Last Closed: 2022-04-18 15:53:40 UTC
Embargoed:

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Description Pedro Sampaio 2022-04-01 16:48:03 UTC 
There are use-after-free vulnerabilities in net/ax25/af_ax25.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/d01ffb9eee4af165d83b08dd73ebdf9fe94a519b
https://github.com/torvalds/linux/commit/87563a043cef044fed5db7967a75741cc16ad2b1
https://github.com/torvalds/linux/commit/feef318c855a361a1eccd880f33e88c460eb63b4
https://github.com/torvalds/linux/commit/9fd75b66b8f68498454d685dc4ba13192ae069b0
https://github.com/torvalds/linux/commit/5352a761308397a0e6250fdc629bb3f615b94747
Comment 1 Pedro Sampaio 2022-04-01 16:48:35 UTC 
Created kernel tracking bugs for this issue:

Affects: fedora-all [bug 2071052]
Comment 2 Salvatore Bonaccorso 2022-04-02 12:03:46 UTC 
https://www.openwall.com/lists/oss-security/2022/04/02/2
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