CyberSecBulletin
CVE-2026-22984NVD status: Modified

Linux: Out-of-bounds Read

Published Updated By the CyberSecBulletin desk

CVE-2026-22984 is a high-severity out-of-bounds read vulnerability in Linux, with a CVSS 3.1 base score of 7.1 out of 10. It can be exploited with local access to the system by an attacker with a low-privileged account, without any action from a user. The record lists versions 194cfe2af4d2a1de599d39dad636b47c2f6c2c96, 79fe3511db416d2f2edcfd93569807cb02736e5e, ef208ea331ef688729f64089b895ed1b49e842e3 as the first without the flaw, so updating Linux to one of those releases or later removes the exposure. There is no confirmed exploitation so far. EPSS estimates a 0.41% chance of exploitation within 30 days, which is low compared with other CVEs.

Next patch cycle

High severity with no evidence of exploitation so far.

What to do

  1. Update Linux to 194cfe2af4d2a1de599d39dad636b47c2f6c2c96 or 79fe3511db416d2f2edcfd93569807cb02736e5e or ef208ea331ef688729f64089b895ed1b49e842e3 or 2802ef3380fa8c4a08cda51ec1f085b1a712e9e2, whichever matches your release line, or a later version.
  2. Update Linux Kernel to 5.15.198 or 6.1.161 or 6.6.121 or 6.12.66, whichever matches your release line, or a later version.

Affected products and versions

VendorProductAffected versionsFixed in
LinuxLinuxcd1a677cad994021b19665ed476aea63f5d54f31 up to, but not including, 194cfe2af4d2a1de599d39dad636b47c2f6c2c96; cd1a677cad994021b19665ed476aea63f5d54f31 up to, but not including, 79fe3511db416d2f2edcfd93569807cb02736e5e; cd1a677cad994021b19665ed476aea63f5d54f31 up to, but not including, ef208ea331ef688729f64089b895ed1b49e842e3; cd1a677cad994021b19665ed476aea63f5d54f31 up to, but not including, 2802ef3380fa8c4a08cda51ec1f085b1a712e9e2; cd1a677cad994021b19665ed476aea63f5d54f31 up to, but not including, 2d653bb63d598ae4b096dd678744bdcc34ee89e8; cd1a677cad994021b19665ed476aea63f5d54f31 up to, but not including, 818156caffbf55cb4d368f9c3cac64e458fb49c9; 5.11194cfe2af4d2a1de599d39dad636b47c2f6c2c96, 79fe3511db416d2f2edcfd93569807cb02736e5e, ef208ea331ef688729f64089b895ed1b49e842e3, 2802ef3380fa8c4a08cda51ec1f085b1a712e9e2, 2d653bb63d598ae4b096dd678744bdcc34ee89e8, 818156caffbf55cb4d368f9c3cac64e458fb49c9
LinuxLinux Kernel5.11 up to, but not including, 5.15.198; 5.16 up to, but not including, 6.1.161; 6.2 up to, but not including, 6.6.121; 6.7 up to, but not including, 6.12.66; 6.13 up to, but not including, 6.18.6; 6.195.15.198, 6.1.161, 6.6.121, 6.12.66, 6.18.6

Version data comes from the organisation that assigned the CVE. Confirm against the vendor advisory before deciding you are unaffected.

How the severity score breaks down

Attack vector
LocalThe attacker needs local access or must trick a user into running something.
Attack complexity
LowNo special conditions are needed; the attack works reliably.
Privileges required
LowA basic user account is enough.
User interaction
NoneNo action by a victim is required.
Scope
UnchangedImpact stays within the vulnerable component.
Confidentiality
HighAll data handled by the component can be read.
Integrity
NoneNothing can be modified.
Availability
HighThe component can be taken down completely.

Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H. Scored by NVD.

Scoring systemScoreSeverityScored by
CVSS 3.19.8CriticalCNA
CVSS 3.17.1HighNVD

Official description

In the Linux kernel, the following vulnerability has been resolved: libceph: prevent potential out-of-bounds reads in handle_auth_done() Perform an explicit bounds check on payload_len to avoid a possible out-of-bounds access in the callout. [ idryomov: changelog ]

Source: the CVE record as published by its numbering authority, via NVD and CVE.org.

The underlying weakness: Out-of-bounds Read

The product reads data past the end, or before the beginning, of the intended buffer.

How developers prevent this class of flaw

  • Use a language that provides appropriate memory abstractions.

More Out-of-bounds Read vulnerabilities (CWE-125)

Timeline

  1. CVE record published.
  2. CISA published its SSVC assessment (exploitation: none, automatable: yes, technical impact: total).
  3. Record last changed materially (score, affected products, status or references).

References

Recent Out-of-bounds Read vulnerabilities

Spotted an error? Tell us.