01 Record

CVE-2026-31555

futex: Clear stale exiting pointer in futex_lock_pi() retry path

UnratedPUBLISHEDCNA: Linux

CNA base scoreUnratedNo CNA CVSS vector

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02 Description

futex: Clear stale exiting pointer in futex_lock_pi() retry path

03 Exploitation and scoring

Exploitation: Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.
SSVC decision: Not assessed by CISA
EPSS probability: 0.13% probability of exploitation activity in the next 30 days.
EPSS percentile: Ranks above 2.9% of scored records. A rank, not a probability.
NVD base score: 5.5 (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:N/I:N/A:H
NVD analysis status: Modified. NVD last modified this record on 2026-07-14.
Red Hat severity: Moderate. 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

2026-04-24 14:35Z4 MO AGO

Last updated

2026-07-14 12:48Z1 MO AGO

Reserved

2026-03-09

Assigning CNA

Linux

Record state

PUBLISHED

Severity

Not rated by the issuing CNA

CNA CVSS vector

Not published by the issuing CNA

Weaknesses

CWE-825Expired Pointer DereferenceBase

Data version

5.2

Document digest

ae3b4b4a81ef58100713c07895004e1c1a7ac4f0831eb2b1159cc815aa99bfbf

05 Affected products

VendorProductVersionsPlatforms

LinuxLinux3ef240eaff36b8119ac9e2ea17cbf41179c930ba to < 33095ae3bdde5e5c264d7e88a2f3e7703a26c7aa, 3ef240eaff36b8119ac9e2ea17cbf41179c930ba to < e7824ec168d2ac883a213cd1f4d6cc0816002a85, 3ef240eaff36b8119ac9e2ea17cbf41179c930ba to < 5e8e06bf8909e79b4acd950cf578cfc2f10bbefa, 3ef240eaff36b8119ac9e2ea17cbf41179c930ba to < de7c0c04ad868f2cee6671b11c0a6d20421af1da, 3ef240eaff36b8119ac9e2ea17cbf41179c930ba to < 7475dfad10a05a5bfadebf5f2499bd61b19ed293, 3ef240eaff36b8119ac9e2ea17cbf41179c930ba to < 92e47ad03e03dbb5515bdf06444bf6b1e147310d, 3ef240eaff36b8119ac9e2ea17cbf41179c930ba to < 71112e62807d1925dc3ae6188b11f8cfc85aec23, 3ef240eaff36b8119ac9e2ea17cbf41179c930ba to < 210d36d892de5195e6766c45519dfb1e65f3eb83, f2a9957e5c08b1b1caacd18a3dc4c0a1bdb7b463, cf16e42709aa86aa3e37f3acc3d13d5715d90096, 61fa9f167caaa73d0a7c88f498eceeb12c6fa3db, 7874eee0130adf9bee28e8720bb5dd051089def3, fc3b55ef2c840bb2746b2d8121a0788de84f7fac, 4.4.255 to < 4.5, 4.9.255 to < 4.10, 4.14.158 to < 4.15, 4.19.172 to < 4.20, 5.4.1 to < 5.5, 5.5—

06 References

git.kernel.orghttps://git.kernel.org/stable/c/33095ae3bdde5e5c264d7e88a2f3e7703a26c7aa
git.kernel.orghttps://git.kernel.org/stable/c/e7824ec168d2ac883a213cd1f4d6cc0816002a85
git.kernel.orghttps://git.kernel.org/stable/c/5e8e06bf8909e79b4acd950cf578cfc2f10bbefa
git.kernel.orghttps://git.kernel.org/stable/c/de7c0c04ad868f2cee6671b11c0a6d20421af1da
git.kernel.orghttps://git.kernel.org/stable/c/7475dfad10a05a5bfadebf5f2499bd61b19ed293
git.kernel.orghttps://git.kernel.org/stable/c/92e47ad03e03dbb5515bdf06444bf6b1e147310d
git.kernel.orghttps://git.kernel.org/stable/c/71112e62807d1925dc3ae6188b11f8cfc85aec23
git.kernel.orghttps://git.kernel.org/stable/c/210d36d892de5195e6766c45519dfb1e65f3eb83
cert-portal.siemens.comhttps://cert-portal.siemens.com/productcert/html/ssa-082556.html
cert-portal.siemens.comhttps://cert-portal.siemens.com/productcert/html/ssa-019113.html

01 Record index

CVE-2026-31555

02 Description

03 Exploitation and scoring

04 Metadata

05 Affected products

06 References

02 Records

CVE-2026-31555

02 Description

03 Exploitation and scoring

04 Metadata

05 Affected products

06 References