CVE-2026-89699

Katalog CVE

CVSS 7.5 · High EPSS 0,50%

Skor CVSS 3.1 7.5 (High) menurut CNA.

Deskripsi (NVD)

In the Linux kernel, the following vulnerability has been resolved: nfsd: validate symlink target length in NFSv4 CREATE nfsd4_decode_create() accepts an unbounded cr_datalen from the wire for NF4LNK symlink targets, allowing a client to force a kmalloc of up to the maximum RPC payload size (several MiB) per COMPOUND op that persists until compound teardown. The VFS rejects oversized targets with ENAMETOOLONG, but the allocation has already occurred. Reject cr_datalen == 0 early with nfserr_inval and cr_datalen greater than NFS4_MAXPATHLEN (PATH_MAX) with nfserr_nametoolong to bound the allocation.

Rincian

Terbit di NVD

11 September 2026

Terakhir diubah

14 September 2026

Status NVD

Received

CVSS 3.1

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

EPSS (30 hari)

0,50% peluang dieksploitasi; lebih tinggi dari 41,2% 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/041f57056e5fb9c80adc088269322d2c61074406
• https://git.kernel.org/stable/c/36011308b3f01ce7dc9954f3cefcbb5291af9f95
• https://git.kernel.org/stable/c/3ef5e7a01a4d74995a65496bc9166d1e980a4355
• https://git.kernel.org/stable/c/45ec115cbfecb4b3cfab7fca6f73d1b60696a25a
• https://git.kernel.org/stable/c/8661d3cb38fd148947e57dbc0871fd4d3fa33bbf
• https://git.kernel.org/stable/c/888dad4b557352cf85be31613407b5ba51ad07d1
• https://git.kernel.org/stable/c/895a485cd3758031ef9993c0d53cf19ce8fb4ccc
• https://git.kernel.org/stable/c/b24843ea3de1676b29902457b38507c95a80649b