7.8

CVE-2022-49921

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

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").
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
LinuxLinux Kernel Version >= 4.4.163 < 4.5
LinuxLinux Kernel Version >= 4.7 < 4.9.333
LinuxLinux Kernel Version >= 4.10 < 4.14.299
LinuxLinux Kernel Version >= 4.15 < 4.19.265
LinuxLinux Kernel Version >= 4.20 < 5.4.224
LinuxLinux Kernel Version >= 5.5 < 5.10.154
LinuxLinux Kernel Version >= 5.11 < 5.15.78
LinuxLinux Kernel Version >= 5.16 < 6.0.8
LinuxLinux Kernel Version6.1 Updaterc1
LinuxLinux Kernel Version6.1 Updaterc2
LinuxLinux Kernel Version6.1 Updaterc3
VulnDex Vulnerability Enrichment
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Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.16% 0.054
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
nvd@nist.gov 7.8 1.8 5.9
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
134c704f-9b21-4f2e-91b3-4a467353bcc0 7.8 1.8 5.9
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CWE-416 Use After Free

The product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.

https://git.kernel.org/stable/c/795afe0b9bb6c915f0299a8e309936519be01619
Patch
https://git.kernel.org/stable/c/a238cdcf2bdc72207c74375fc8be13ee549ca9db
Patch
https://git.kernel.org/stable/c/e877f8fa49fbccc63cb2df2e9179bddc695b825a
Patch
https://git.kernel.org/stable/c/52e0429471976785c155bfbf51d80990c6cd46e2
Patch
https://git.kernel.org/stable/c/5960b9081baca85cc7dcb14aec1de85999ea9d36
Patch
https://git.kernel.org/stable/c/fc4b50adb400ee5ec527a04073174e8e73a139fa
Patch
https://git.kernel.org/stable/c/170e5317042c302777ed6d59fdb84af9b0219d4e
Patch
https://git.kernel.org/stable/c/8bdc2acd420c6f3dd1f1c78750ec989f02a1e2b9
Patch