CVE-2026-63992

Katalog CVE

CVSS 9.1 · Critical EPSS 0,51%

Kerentanan Out-of-bounds Read pada linux kernel. Skor CVSS 3.1 9.1 (Critical) menurut CNA.

Deskripsi (NVD)

In the Linux kernel, the following vulnerability has been resolved: tunnels: do not assume transport header in iptunnel_pmtud_check_icmp() In some cases, iptunnel_pmtud_check_icmp() can be called while skb transport header is not set. This triggers an out-of-bound access, because (typeof(skb->transport_header))~0U is 65535. Access the icmp header based on IPv4 network header, after making sure icmp->type is present in skb linear part. Note that iptunnel_pmtud_check_icmpv6()) is fine.

Rincian

Terbit di NVD

19 Juli 2026

Terakhir diubah

7 Oktober 2026

Status NVD

Analyzed

CVSS 3.1

9.1 (Critical), sumber CNA
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H · uraikan di kalkulator

Jenis kelemahan (CWE)

CWE-125: Out-of-bounds Read

EPSS (30 hari)

0,51% peluang dieksploitasi; lebih tinggi dari 42,1% CVE lain

Produk dan versi terdampak

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

• https://git.kernel.org/stable/c/43368636c663cff6e59dde93cf4b8e43ac28eb93 patch
• https://git.kernel.org/stable/c/509323077ef79a26ba0c60bb556e45c12c398b2d patch
• https://git.kernel.org/stable/c/5a92cb45e34749865d03daf8d3500f77b5f6644c patch
• https://git.kernel.org/stable/c/7f4f7efe7f30edd29c4988de01728bf2398217e4 patch
• https://git.kernel.org/stable/c/a096b6e34f602950af9a2b0856cd93a5f4c276d7 patch
• https://git.kernel.org/stable/c/c7b7ec3e69e673c0d6b57f74d21da50c485c598e patch
• https://git.kernel.org/stable/c/cb549df9ce4ee15c9d5b19ddab12cf2128e4313c patch
• https://git.kernel.org/stable/c/e917d0c69f01af2bb4fbea2b66d560a53b3ac7ec patch