Bug 2363452 (CVE-2022-49921) - CVE-2022-49921 kernel: net: sched: Fix use after free in red_enqueue()
Summary: CVE-2022-49921 kernel: net: sched: Fix use after free in red_enqueue()
Keywords:
Status: NEW
Alias: CVE-2022-49921
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Product Security DevOps Team
QA Contact:
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2025-05-01 15:05 UTC by OSIDB Bzimport
Modified: 2025-06-10 20:03 UTC (History)
4 users (show)

Fixed In Version:
Clone Of:
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Description OSIDB Bzimport 2025-05-01 15:05:14 UTC 
In the Linux kernel, the following vulnerability has been resolved:

net: sched: Fix use after free in red_enqueue()

We can't use "skb" again after passing it to qdisc_enqueue().  This is
basically identical to commit 2f09707d0c97 ("sch_sfb: Also store skb
len before calling child enqueue").
Comment 1 Avinash Hanwate 2025-05-02 05:58:18 UTC 
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2025050108-CVE-2022-49921-e4fc@gregkh/T
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