Bug 2010970 (CVE-2021-42008) - CVE-2021-42008 kernel: slab out-of-bounds write in decode_data() in drivers/net/hamradio/6pack.c
Summary: CVE-2021-42008 kernel: slab out-of-bounds write in decode_data() in drivers/n...
Keywords:
Status: CLOSED NOTABUG
Alias: CVE-2021-42008
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: 2010971
Blocks: 2010972
TreeView+ depends on / blocked
 
Reported: 2021-10-05 17:09 UTC by Guilherme de Almeida Suckevicz
Modified: 2023-03-14 12:04 UTC (History)
45 users (show)

Fixed In Version: kernel 5.14-rc7
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Last Closed: 2021-10-11 08:08:15 UTC
Embargoed:

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Description Guilherme de Almeida Suckevicz 2021-10-05 17:09:21 UTC 
The decode_data function in drivers/net/hamradio/6pack.c in the Linux kernel before 5.13.13 has a slab out-of-bounds write. Input from a process that has the CAP_NET_ADMIN capability can lead to root access.

Reference:
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=19d1532a187669ce86d5a2696eb7275310070793
Comment 1 Guilherme de Almeida Suckevicz 2021-10-05 17:09:50 UTC 
Created kernel tracking bugs for this issue:

Affects: fedora-all [bug 2010971]
Comment 5 Justin M. Forbes 2021-10-06 21:08:00 UTC 
This was fixed for Fedora with the 5.13.13 stable kernel update.
Comment 7 Product Security DevOps Team 2021-10-11 08:08:15 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-2021-42008
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