Linux Kernel up to 6.19-rc4 libceph handle_auth_done out-of-bounds

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CTI Interest Score
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5.2$0-$5k0.00

Summaryinfo

A vulnerability, which was classified as critical, was found in Linux Kernel up to 6.19-rc4. Affected by this issue is the function handle_auth_done of the component libceph. Such manipulation leads to out-of-bounds. This vulnerability is documented as CVE-2026-22984. There is not any exploit available. You should upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as problematic, has been found in Linux Kernel up to 6.19-rc4. Affected by this issue is the function handle_auth_done of the component libceph. The manipulation with an unknown input leads to a out-of-bounds vulnerability. Using CWE to declare the problem leads to CWE-125. The product reads data past the end, or before the beginning, of the intended buffer. Impacted is confidentiality. CVE summarizes:

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 ]

The advisory is shared for download at git.kernel.org. This vulnerability is handled as CVE-2026-22984 since 01/13/2026. There are known technical details, but no exploit is available.

The vulnerability scanner Nessus provides a plugin with the ID 296396 (Linux Distros Unpatched Vulnerability : CVE-2026-22984), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 5.15.198, 6.1.161, 6.6.121, 6.12.66, 6.18.6 or 6.19-rc5 eliminates this vulnerability. Applying the patch 194cfe2af4d2a1de599d39dad636b47c2f6c2c96/79fe3511db416d2f2edcfd93569807cb02736e5e/ef208ea331ef688729f64089b895ed1b49e842e3/2802ef3380fa8c4a08cda51ec1f085b1a712e9e2/2d653bb63d598ae4b096dd678744bdcc34ee89e8/818156caffbf55cb4d368f9c3cac64e458fb49c9 is able to eliminate this problem. The bugfix is ready for download at git.kernel.org. The best possible mitigation is suggested to be upgrading to the latest version.

The vulnerability is also documented in the databases at Tenable (296396) and CERT Bund (WID-SEC-2026-0215). Once again VulDB remains the best source for vulnerability data.

Affected

  • Debian Linux
  • Amazon Linux 2
  • Red Hat Enterprise Linux
  • Ubuntu Linux
  • SUSE Linux
  • Oracle Linux
  • IBM QRadar SIEM
  • SUSE openSUSE
  • RESF Rocky Linux
  • NetApp ActiveIQ Unified Manager
  • Open Source Linux Kernel

Productinfo

Type

Vendor

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.3
VulDB Meta Temp Score: 5.2

VulDB Base Score: 3.5
VulDB Temp Score: 3.4
VulDB Vector: 🔒
VulDB Reliability: 🔍

NVD Base Score: 7.1
NVD Vector: 🔒

CVSSv2info

AVACAuCIA
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💳💳💳💳💳💳
💳💳💳💳💳💳
VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Out-of-bounds
CWE: CWE-125 / CWE-119
CAPEC: 🔒
ATT&CK: 🔒

Physical: Partially
Local: Yes
Remote: Partially

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

0-DayUnlockUnlockUnlockUnlock
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Nessus ID: 296396
Nessus Name: Linux Distros Unpatched Vulnerability : CVE-2026-22984

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: Kernel 5.15.198/6.1.161/6.6.121/6.12.66/6.18.6/6.19-rc5
Patch: 194cfe2af4d2a1de599d39dad636b47c2f6c2c96/79fe3511db416d2f2edcfd93569807cb02736e5e/ef208ea331ef688729f64089b895ed1b49e842e3/2802ef3380fa8c4a08cda51ec1f085b1a712e9e2/2d653bb63d598ae4b096dd678744bdcc34ee89e8/818156caffbf55cb4d368f9c3cac64e458fb49c9

Timelineinfo

01/13/2026 CVE reserved
01/23/2026 +10 days Advisory disclosed
01/23/2026 +0 days VulDB entry created
05/18/2026 +115 days VulDB entry last update

Sourcesinfo

Vendor: kernel.org

Advisory: git.kernel.org
Status: Confirmed

CVE: CVE-2026-22984 (🔒)
GCVE (CVE): GCVE-0-2026-22984
GCVE (VulDB): GCVE-100-342596
CERT Bund: WID-SEC-2026-0215 - Linux Kernel: Mehrere Schwachstellen

Entryinfo

Created: 01/23/2026 17:30
Updated: 05/18/2026 03:45
Changes: 01/23/2026 17:30 (59), 01/25/2026 12:37 (2), 02/26/2026 20:20 (11), 03/20/2026 09:56 (7), 05/18/2026 03:45 (1)
Complete: 🔍
Cache ID: 216::103

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