Description
qfq_change_class in net/sched/sch_qfq.c in the Linux kernel before 6.2.13 allows an out-of-bounds write because lmax can exceed QFQ_MIN_LMAX.
References (9)
Core 9
Core References
Third Party Advisory, VDB Entry
http://packetstormsecurity.com/files/173087/Kernel-Live-Patch-Security-Notice-LSN-0095-1.html
Third Party Advisory, VDB Entry
http://packetstormsecurity.com/files/173757/Kernel-Live-Patch-Security-Notice-LSN-0096-1.html
Mailing List, Patch
https://cdn.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.2.13
Third Party Advisory
https://security.netapp.com/advisory/ntap-20230609-0001/
Mailing List, Patch
https://www.spinics.net/lists/stable-commits/msg294885.html
Exploit, Third Party Advisory
http://packetstormsecurity.com/files/175963/Kernel-Live-Patch-Security-Notice-LSN-0099-1.html
VDB Entry vendor-advisory
https://www.debian.org/security/2023/dsa-5402
Mailing List, Third Party Advisory mailing-list
https://lists.debian.org/debian-lts-announce/2023/06/msg00008.html
Scores
CVSS v3
7.8
EPSS
0.0058
EPSS Percentile
43.5%
Attack Vector
LOCAL
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
no
Technical Impact
total
Details
CWE
CWE-787
Status
published
Products (1)
linux/linux_kernel
3.7 - 4.14.314
Published
Apr 28, 2023
Tracked Since
Feb 18, 2026