CVE-2022-49921
net: sched: Fix use after free in red_enqueue()
- Published
- Last modified
- Where the record stands: published, rejected by its publisher, or superseded by another id.What do these mean? →
- published
- Whether CISA lists it in its Known Exploited Vulnerabilities catalog: proof that attackers are using it.What do these mean? →
- Not listed in CISA KEV
- Fix
- Fixed in 4.5
- Whether working attack code is public (Exploit-DB, Metasploit, Nuclei or GitHub). Public code makes attacks easier.What do these mean? →
- None on Exploit-DB, Metasploit or GitHub
CISA's decision points: whether it is exploited, whether attacks can be automated, and how much control an attacker gets. Assessed (SSVC 2.0.3).What do these mean? →
- Exploitation: none
- Automatable: no
- Technical impact: total
Summary
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").
Timeline
- CVE published
- CISA SSVC assessment
Exploitation: none · Automatable: no · Technical impact: total
- Record last updated
Affected versions
- Linux Linux
From 4.4.163 · fixed in 4.5
- Linux Linux
4.7
References 8
git.kernel.org
- stable/c/795afe0b9bb6c915f0299a8e309936519be01619
- stable/c/a238cdcf2bdc72207c74375fc8be13ee549ca9db
- stable/c/e877f8fa49fbccc63cb2df2e9179bddc695b825a
- stable/c/52e0429471976785c155bfbf51d80990c6cd46e2
- stable/c/5960b9081baca85cc7dcb14aec1de85999ea9d36
- stable/c/fc4b50adb400ee5ec527a04073174e8e73a139fa
- stable/c/170e5317042c302777ed6d59fdb84af9b0219d4e
- stable/c/8bdc2acd420c6f3dd1f1c78750ec989f02a1e2b9