CVE-2026-98288
- Source
- https://cve.org/CVERecord?id=CVE-2026-98288
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-98288.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2026-98288
- Downstream
- Published
- 2026-10-06T08:45:48Z
- Modified
- 2026-10-08T02:52:56Z
- Summary
- net: stmmac: fix TSO header length truncation
- Details
-
In the Linux kernel, the following vulnerability has been resolved:
net: stmmac: fix TSO header length truncation
stmmac_tso_xmit() stores the protocol header length returned by stmmac_tso_header_size() in a u8. stmmac_tso_valid_packet() admits headers up to 1023 bytes, so a header longer than 255 bytes wraps modulo 256 (486 becomes 230, 256 becomes 0).
A TCP over IPv6 socket carrying a few hundred bytes of sticky destination/hop-by-hop options makes skb_tcp_all_headers() exceed 255 while staying below the 1023-byte limit, so such an skb reaches stmmac_tso_xmit().
Widen proto_hdr_len to unsigned int, which is sufficient since the value is bounded by the hardware limit, and adjust the debug print specifier accordingly.
- Database specific
{ "cna_assigner": "Linux", "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/98xxx/CVE-2026-98288.json" }- References
-
- https://git.kernel.org/stable/c/15989abd74f16f44bf953d056b95f1d2fda9b0cd
- https://git.kernel.org/stable/c/bcf6013c2b4d732c6e4bf4d0f6ae4a18d63d414b
- https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/98xxx/CVE-2026-98288.json
- https://nvd.nist.gov/vuln/detail/CVE-2026-98288
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git