CVE-2026-74581

Katalog CVE

CVSS 9.8 · Critical EPSS 0,42%

Skor CVSS 3.1 9.8 (Critical) menurut CNA.

Deskripsi (NVD)

In the Linux kernel, the following vulnerability has been resolved: net: ipv6: clear suppressed fib6 rule result fib6_rule_suppress() drops a suppressed route with ip6_rt_put_flags(), but leaves res->rt6 pointing at the released rt6_info. If no later rule supplies a replacement, fib6_rule_lookup() still sees res.rt6 and returns that stale dst to its caller. A suppressing rule can therefore leak a released route back to rt6_lookup(), and the next put hits rcuref_put_slowpath() from dst_release(). Clear res->rt6 when suppressing the route so suppressed lookups fall through to the null dst instead of reusing the released one.

Advisory KUTIM-CSIRT

• Peringatan Keamanan: 15 Kerentanan Kernel Linux Periode Agustus 2026 pada Ubuntu dan AlmaLinux 27 Sep 2026

Rincian

Terbit di NVD

21 Agustus 2026

Terakhir diubah

25 Agustus 2026

Status NVD

Received

CVSS 3.1

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

EPSS (30 hari)

0,42% peluang dieksploitasi; lebih tinggi dari 34,6% CVE lain

Produk dan versi terdampak

NVD belum mencantumkan data produk (CPE) untuk CVE ini. Produk yang terdampak biasanya disebut di deskripsi dan di advisory vendor pada daftar referensi.

Referensi dan perbaikan

• https://git.kernel.org/stable/c/354db6243eca59e9d187ffbf8b7955b044ce84dc
• https://git.kernel.org/stable/c/5d29b286c9de0b309e94b9ed083aa1a2f429434f
• https://git.kernel.org/stable/c/6aea62e433fe1b586202a5fee8b5807ce635e1d7
• https://git.kernel.org/stable/c/6d98c70fe0ba8c7708bfd5b2a5174d2086775daa
• https://git.kernel.org/stable/c/90c57310e266eb94e4a80d6b15a9ca131d2e82cb
• https://git.kernel.org/stable/c/9bad152c42b37499162367fe47867411e62fffa3
• https://git.kernel.org/stable/c/a341c091ca0bfae377747b1b59a3bd8ebe18a937
• https://git.kernel.org/stable/c/dc3ab04220667f254f4348572b2a0b3febff89fb