CVE-2026-90104

criticalpriority · track · 0EPSS 0.006 · 50 %ileDEFR
grimoire priorityP2 · Scheduled
Exploitable?
—
no known exploitation
Likely / severe?
0.64% (50th) EPSS
CVSS 9.8 · critical
Is it mine?
9 products
Check your exposure
Who says so?
2 sources
cert_bund · certfr

EPSS · scored 2026-10-27

In the Linux kernel, the following vulnerability has been resolved: NFSv4.1: zero referring call lists before decoding decode_cb_sequence_args() allocates csa_rclists with kmalloc_objs(), so each referring_call_list starts uninitialized. decode_rc_list() assigns rcl_refcalls only when rcl_nrefcalls is nonzero. A valid list with zero referring calls therefore leaves the pointer uninitialized, and nfs4_callback_sequence() later passes stale slab contents to kfree(). Allocate csa_rclists with kzalloc_objs() so every rcl_refcalls member is NULL from the beginning, including valid empty referring call lists.

01

cvss

Technical severity, 0–10. One row per scoring source.

9.8
010

base score 0–10 · higher = more severe · hover a vector to decode

v3.19.8criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:Hsecondaryexploitability 3.9 · impact 5.9
v3.19criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:Usecondary · CVSS-BT (t0sche)
02

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-416USLLM-inferredCWE-762USLLM-inferred
03

affected products (9)

Products and version ranges known to be affected.

04

advisories (3)

Vendor and ecosystem advisories describing this.

  • WID-SEC-W-2026-3444Linux Kernel: Mehrere SchwachstellenDeutsch2026-09-17csaf · cert_bundDE

    Ein Angreifer kann mehrere Schwachstellen im Linux Kernel möglicherweise ausnutzen, um Berechtigungen zu erweitern, Sicherheitsmaßnahmen zu umgehen, Daten offenzulegen oder zu manipulieren, den Speicher zu beschädigen, Denial-of-Service-Zustände zu verursachen oder andere, nicht näher spezifizierte Angriffe durchzuführen.

  • CERTFR-2026-AVI-1335Multiples vulnérabilités dans le noyau Linux de SUSEFrançais2026-10-16vendor · certfrFR
  • CERTFR-2026-AVI-1372Multiples vulnérabilités dans les produits SUSEFrançais2026-10-23vendor · certfrFR
05

sources

Which sources assert this record, and when.

cert_bundcertfrNVDCVE.orgMITRE
published 2026-09-17modified 2026-10-21
06

references (5) nvd

External citations — patches, advisories, analysis.

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