A use-after-free vulnerability in the Linux kernel's net/sched: sch_hfsc (HFSC qdisc traffic control) component can be exploited to achieve local privilege escalation.
If a class with a link-sharing curve (i.e. with the HFSC_FSC flag set) has a parent without a link-sharing curve, then init_vf() will call vttree_insert() on the parent, but vttree_remove() will be skipped in update_vf(). This leaves a dangling pointer that can cause a use-after-free.
We recommend upgrading past commit b3d26c5702c7d6c45456326e56d2ccf3f103e60f.
References
Configurations
Configuration 1 (hide)
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Configuration 2 (hide)
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History
21 Nov 2024, 08:35
| Type | Values Removed | Values Added |
|---|---|---|
| References | () http://packetstormsecurity.com/files/175963/Kernel-Live-Patch-Security-Notice-LSN-0099-1.html - Third Party Advisory, VDB Entry | |
| References | () https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=b3d26c5702c7d6c45456326e56d2ccf3f103e60f - Issue Tracking, Mailing List, Patch, Vendor Advisory | |
| References | () https://kernel.dance/b3d26c5702c7d6c45456326e56d2ccf3f103e60f - Patch, Vendor Advisory | |
| References | () https://lists.debian.org/debian-lts-announce/2023/10/msg00027.html - Mailing List, Third Party Advisory | |
| References | () https://lists.debian.org/debian-lts-announce/2024/01/msg00004.html - Mailing List, Third Party Advisory |
26 Aug 2024, 16:07
| Type | Values Removed | Values Added |
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| References | () http://packetstormsecurity.com/files/175963/Kernel-Live-Patch-Security-Notice-LSN-0099-1.html - Third Party Advisory, VDB Entry | |
| References | () https://lists.debian.org/debian-lts-announce/2024/01/msg00004.html - Mailing List, Third Party Advisory |
11 Jan 2024, 19:15
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| References |
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29 Nov 2023, 15:15
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| References |
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29 Oct 2023, 02:40
| Type | Values Removed | Values Added |
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| First Time |
Debian debian Linux
Debian |
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| References | (MISC) https://lists.debian.org/debian-lts-announce/2023/10/msg00027.html - Mailing List, Third Party Advisory | |
| CPE | cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:* |
20 Oct 2023, 00:15
| Type | Values Removed | Values Added |
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| References |
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11 Sep 2023, 18:15
| Type | Values Removed | Values Added |
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| CVSS |
v2 : v3 : |
v2 : unknown
v3 : 7.8 |
| CWE | CWE-416 | |
| First Time |
Linux
Linux linux Kernel |
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| CPE | cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:2.6.12:rc1:*:*:*:*:*:* |
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| References | (MISC) https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=b3d26c5702c7d6c45456326e56d2ccf3f103e60f - Issue Tracking, Mailing List, Patch, Vendor Advisory | |
| References | (MISC) https://kernel.dance/b3d26c5702c7d6c45456326e56d2ccf3f103e60f - Patch, Vendor Advisory |
06 Sep 2023, 14:15
| Type | Values Removed | Values Added |
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| New CVE |
Information
Published : 2023-09-06 14:15
Updated : 2024-11-21 08:35
NVD link : CVE-2023-4623
Mitre link : CVE-2023-4623
CVE.ORG link : CVE-2023-4623
JSON object : View
Products Affected
debian
- debian_linux
linux
- linux_kernel
CWE
CWE-416
Use After Free