01 Record

CVE-2026-43499

rtmutex: Use waiter::task instead of current in remove_waiter()

HighPUBLISHEDCNA: Linux

CNA base score7.8 CVSS v3.xCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

View raw JSON

02 Description

rtmutex: Use waiter::task instead of current in remove_waiter()

03 Exploitation and scoring

Exploitation

Public exploit code exists. CISA's assessment records a public proof of concept. That is not a report of exploitation in the wild.

SSVC decision

ExploitationpocPublic proof-of-concept exploit code exists. Not a report of exploitation in the wild.
AutomatablenoAt least one step from reconnaissance to exploitation cannot be reliably automated.
Technical ImpacttotalSuccessful exploitation gives total control of the vulnerable component.

CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.

EPSS probability

0.77% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 52.8% of scored records. A rank, not a probability.

NVD base score

7.8 (CVSS v3.x), scored by the NVD independently of the CNA.

NVD CVSS vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

NVD analysis status

Modified. NVD last modified this record on 2026-08-26.

Red Hat severity

Important. Red Hat's rating for its own products, not a CVSS rating.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

04 Metadata

Published

2026-05-21 12:17Z3 MO AGO

Last updated

2026-08-26 19:01Z8 DAYS AGO

Reserved

2026-05-01

Assigning CNA

Linux

Record state

PUBLISHED

Severity

High (CVSS 7.8)

CNA CVSS vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Weaknesses

CWE-416Use After FreeVariant

Data version

5.2

Document digest

16db986243fb5429464e26ec9e6399e94569e2d50634361be8e5229758297e1f

05 Affected products

VendorProductVersionsPlatforms

LinuxLinux8161239a8bcce9ad6b537c04a1fa3b5c68bae693 to < f3fa3424bceb128d2be4b3745506b22844b87db7, 8161239a8bcce9ad6b537c04a1fa3b5c68bae693 to < 838ce5cb5d93c3ab8b27e75bc6ad905a94b752fd, 8161239a8bcce9ad6b537c04a1fa3b5c68bae693 to < d8cce4773c2b23d819baf5abedc62f7b430e8745, 8161239a8bcce9ad6b537c04a1fa3b5c68bae693 to < 8a1fc8d698ac5e5916e3082a0f74450d71f9611f, 8161239a8bcce9ad6b537c04a1fa3b5c68bae693 to < 6d52dfcb2a5db86e346cf51f8fcf2071b8085166, 8161239a8bcce9ad6b537c04a1fa3b5c68bae693 to < 3fb7394a837740770f0d6b4b30567e60786a63f2, 8161239a8bcce9ad6b537c04a1fa3b5c68bae693 to < 88614876370aac8ad1050ad785a4c095ba17ac11, 8161239a8bcce9ad6b537c04a1fa3b5c68bae693 to < 3bfdc63936dd4773109b7b8c280c0f3b5ae7d349, 2.6.39—

06 References

git.kernel.orghttps://git.kernel.org/stable/c/f3fa3424bceb128d2be4b3745506b22844b87db7
git.kernel.orghttps://git.kernel.org/stable/c/838ce5cb5d93c3ab8b27e75bc6ad905a94b752fd
git.kernel.orghttps://git.kernel.org/stable/c/d8cce4773c2b23d819baf5abedc62f7b430e8745
git.kernel.orghttps://git.kernel.org/stable/c/8a1fc8d698ac5e5916e3082a0f74450d71f9611f
git.kernel.orghttps://git.kernel.org/stable/c/6d52dfcb2a5db86e346cf51f8fcf2071b8085166
git.kernel.orghttps://git.kernel.org/stable/c/3fb7394a837740770f0d6b4b30567e60786a63f2
git.kernel.orghttps://git.kernel.org/stable/c/88614876370aac8ad1050ad785a4c095ba17ac11
git.kernel.orghttps://git.kernel.org/stable/c/3bfdc63936dd4773109b7b8c280c0f3b5ae7d349
www.openwall.comhttp://www.openwall.com/lists/oss-security/2026/07/08/12

01 Record index

CVE-2026-43499

02 Description

03 Exploitation and scoring

04 Metadata

05 Affected products

06 References

02 Records

CVE-2026-43499

02 Description

03 Exploitation and scoring

04 Metadata

05 Affected products

06 References