VulnerabilityPublished 28 May 2026Updated 6 Nov 2026

CVE-2026-46126: Linux kernel · RDMA/mana: Fix mana_destroy_wq_obj() cleanup in mana_ib_create_qp_rss()

Affects Linux kernelSource CVE Database V5

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Not known to be exploited · fixed in bb9cb36eaefa4dcb7c0d9f7a01e5c739abdd53a8 : update Linux kernel when convenient.

Data as of 6 Nov 2026, 16:34 UTC

Severity

Unrated

Rated by Threat Radar · No CVSS score from NVD or the CNA

Thin evidence

One scorer or none

Exploitation: No evidence of active exploitation and no public proof of concept
Automatable: Attackers cannot reliably automate steps 1–4 of the kill chain
Technical impact: Limited control over the software or limited information exposure

CISA SSVC assessment, 2026-11-06.

Patch

Available – fixed in bb9cb36eaefa4dcb7c0d9f7a01e5c739abdd53a8, 34ecf795692ee57c393109f4a24ccc313091e137, 9a05a6798177e44dfbe18393be2c1ebb89ab06fd +1

Exploitation evidence

Disclosed: evidence found.
CVE published 28 May 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 6 Nov 2026.

Disclosed: The CVE record is public on cve.org. Its publication is t = 0.
Detectable: A public nuclei template can find exposed instances, for defenders and attackers alike.
Weaponized: A Metasploit exploit module or Exploit-DB entry exists (Metasploit scanner modules do not count), or CISA SSVC or the CVSS exploit maturity reports a public proof of concept.
Exploited in the wild: CISA KEV lists it, CISA SSVC rates exploitation active, or a source reports attacks.
Observed by OffSeq Mirage: OffSeq Mirage honeypot sensors recorded attack traffic for this CVE, or found exposed hosts without attack traffic.

Moments are spaced evenly, not to scale; a dashed line marks a gap of six months or more. Deltas count from t = 0. Sources that give only a date (CISA KEV, Exploit-DB, or a time of exactly 00:00Z) read “same day” rather than hours. Metasploit modules carry the flaw’s disclosure date, not their release date, and nuclei templates carry no date, so both appear above but not on the timeline.

What to do

Upgrade Linux kernel to bb9cb36eaefa4dcb7c0d9f7a01e5c739abdd53a8, 34ecf795692ee57c393109f4a24ccc313091e137, 9a05a6798177e44dfbe18393be2c1ebb89ab06fd or 8f23eb6c50f1a4bf32fc4d62cfb9fc39e8e586cf.

Affected software

Product	Affected	Fixed in
LinuxLinux	Affected ≥ c15d7802a42402a87880a17eee89ff023e49ecc0, < bb9cb36eaefa4dcb7c0d9f7a01e5c739abdd53a8	Fixed in bb9cb36eaefa4dcb7c0d9f7a01e5c739abdd53a8
LinuxLinux	Affected ≥ c15d7802a42402a87880a17eee89ff023e49ecc0, < 34ecf795692ee57c393109f4a24ccc313091e137	Fixed in 34ecf795692ee57c393109f4a24ccc313091e137
LinuxLinux	Affected ≥ c15d7802a42402a87880a17eee89ff023e49ecc0, < 9a05a6798177e44dfbe18393be2c1ebb89ab06fd	Fixed in 9a05a6798177e44dfbe18393be2c1ebb89ab06fd
LinuxLinux	Affected ≥ c15d7802a42402a87880a17eee89ff023e49ecc0, < 8f23eb6c50f1a4bf32fc4d62cfb9fc39e8e586cf	Fixed in 8f23eb6c50f1a4bf32fc4d62cfb9fc39e8e586cf
LinuxLinux	Affected =6.8	Fixed in–

Description

In the Linux kernel, the following vulnerability has been resolved: RDMA/mana: Fix mana_destroy_wq_obj() cleanup in mana_ib_create_qp_rss() Sashiko points out there are two bugs here in the error unwind flow, both related to how the WQ table is unwound. First there is a double i-- on the first failure path due to the while loop having a i--, remove it. Second if mana_ib_install_cq_cb() fails then mana_create_wq_obj() is not undone due to the above i--.

References

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