SB20240610112 - Integer underflow in Linux kernel
Published: June 10, 2024 Updated: May 13, 2025
Security Bulletin ID
SB20240610112
Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Code execution
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Integer underflow (CVE-ID: CVE-2024-26921)
The vulnerability allows a local user to execute arbitrary code.
The vulnerability exists due to integer underflow within the nf_ct_frag6_queue() and nf_ct_frag6_gather() functions in net/ipv6/netfilter/nf_conntrack_reasm.c, within the ip_frag_queue() and ip_defrag() functions in net/ipv4/ip_fragment.c, within the FRAG_CB(), inet_frag_queue_insert(), inet_frag_reasm_prepare(), EXPORT_SYMBOL() and inet_frag_reasm_finish() functions in net/ipv4/inet_fragment.c. A local user can execute arbitrary code.
Remediation
Install update from vendor's website.
References
- https://git.kernel.org/stable/c/7d0567842b78390dd9b60f00f1d8f838d540e325
- https://git.kernel.org/stable/c/f4877225313d474659ee53150ccc3d553a978727
- https://git.kernel.org/stable/c/e09cbe017311508c21e0739e97198a8388b98981
- https://git.kernel.org/stable/c/18685451fc4e546fc0e718580d32df3c0e5c8272
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.10.227
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.15.168
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.4.285
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.1.85
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.6.26
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.8.5