PT-2026-42457 · Linux+2 · Linux Kernel+2
CVE-2026-43501
·
Published
2026-05-21
·
Updated
2026-07-28
CVSS v2.0
10
High
| Vector | AV:N/AC:L/Au:N/C:C/I:C/A:C |
Name of the Vulnerable Software and Affected Versions
Linux kernel (affected versions not specified)
Description
An out-of-bounds write issue exists in the Linux kernel when recomputing an IPv6 Source Routing Header (SRH). The
ipv6 rpl srh rcv() function decompresses an RFC 6554 SRH, swaps the next segment into ipv6 hdr->daddr, and recompresses it. If the recompressed header is larger than the received one, the process may consume unchecked headroom. When skb push() leaves fewer than skb->mac len bytes in front of the data, the skb set mac header() function called by skb mac header rebuild() can cause an integer wrap in the mac header field. This results in a memory write operation approximately 64KiB past the skb->head buffer, potentially leading to a denial of service or arbitrary code execution.Recommendations
At the moment, there is no information about a newer version that contains a fix for this vulnerability.
Exploit
Buffer Overflow
Memory Corruption
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Related Identifiers
Affected Products
Linuxmint
Linux Kernel
Rocky Linux