CVE-2026-74436

Katalog CVE

CVSS 9.8 · Critical EPSS 0,40%

Skor CVSS 3.1 9.8 (Critical) menurut CNA.

Deskripsi (NVD)

In the Linux kernel, the following vulnerability has been resolved: rxrpc: serialize kernel accept preallocation with socket teardown rxrpc_kernel_charge_accept() reads rx->backlog without any socket/backlog synchronization and passes that raw pointer into rxrpc_service_prealloc_one(). A concurrent rxrpc_discard_prealloc() sets rx->backlog = NULL and frees the backlog rings, so a kernel preallocation worker can keep using a freed struct rxrpc_backlog while updating *_backlog_head/tail and array slots. Serialize the state check and backlog lookup with the socket lock, and reject kernel preallocation once teardown has disabled listening or discarded the service backlog.

Rincian

Terbit di NVD

15 Agustus 2026

Terakhir diubah

23 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)

0,40% peluang dieksploitasi; lebih tinggi dari 32,2% 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/0337cdba0c477f176c0459bed012109453184573
• https://git.kernel.org/stable/c/11b429b84c87cb5a0152f14e7d6cb649ed363901
• https://git.kernel.org/stable/c/1741378a7a83dfd8e53a9196730df709b903cd33
• https://git.kernel.org/stable/c/35a967ff8b24db09ee429c39c5b5e6571639997d
• https://git.kernel.org/stable/c/c20d983968f239574290cf804a58cde18ad1c559
• https://git.kernel.org/stable/c/d6207326b4ca0ae1041281b6af9df53f8080669a
• https://git.kernel.org/stable/c/dc175389b18c29a5303ee83169ec653adfae3e17
• https://git.kernel.org/stable/c/dfa0b2bbc5e50119f89c6b5407faa5ed86dfa7c5