01 Record

CVE-2026-23340

net: sched: avoid qdisc_reset_all_tx_gt() vs dequeue race for lockless qdiscs

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

net: sched: avoid qdisc_reset_all_tx_gt() vs dequeue race for lockless qdiscs

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: 0.14% probability of exploitation activity in the next 30 days.
EPSS percentile: Ranks above 3.6% 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 2026-07-14.
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

2026-03-25 10:27Z5 MO AGO

Last updated

2026-08-05 12:21Z1 MO AGO

Reserved

2026-01-13

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
CWE-364Signal Handler Race ConditionBase

Data version

5.2

Document digest

dc9a1cf4cea88be7aef0bbe797a39dbfb4f955edb07a8a21f0eadd15fac170ee

05 Affected products

VendorProductVersionsPlatforms

LinuxLinux6b3ba9146fe64b9bebb6346c9dcfe3b4851de2d7 to < 5bb27ad54d12de67e457d7d251198e361bef835e, 6b3ba9146fe64b9bebb6346c9dcfe3b4851de2d7 to < 7594467c49bfc2f4644dee0415ac2290db11fa0d, 6b3ba9146fe64b9bebb6346c9dcfe3b4851de2d7 to < dbd58b0730aa06ab6ad26079cf9a5b6b58e7e750, 6b3ba9146fe64b9bebb6346c9dcfe3b4851de2d7 to < 5bc4e69306ed7ae02232eb4c0b23ed621a26d504, 6b3ba9146fe64b9bebb6346c9dcfe3b4851de2d7 to < 8314944cc3bdeaa5a73e6f8a8cf0d94822e625cb, 6b3ba9146fe64b9bebb6346c9dcfe3b4851de2d7 to < c69df4e0524f8de8e176ba389acd83e85f5f49d0, 6b3ba9146fe64b9bebb6346c9dcfe3b4851de2d7 to < 7f083faf59d14c04e01ec05a7507f036c965acf8, 4.16—

06 References

git.kernel.orghttps://git.kernel.org/stable/c/5bb27ad54d12de67e457d7d251198e361bef835e
git.kernel.orghttps://git.kernel.org/stable/c/7594467c49bfc2f4644dee0415ac2290db11fa0d
git.kernel.orghttps://git.kernel.org/stable/c/dbd58b0730aa06ab6ad26079cf9a5b6b58e7e750
git.kernel.orghttps://git.kernel.org/stable/c/5bc4e69306ed7ae02232eb4c0b23ed621a26d504
git.kernel.orghttps://git.kernel.org/stable/c/8314944cc3bdeaa5a73e6f8a8cf0d94822e625cb
git.kernel.orghttps://git.kernel.org/stable/c/c69df4e0524f8de8e176ba389acd83e85f5f49d0
git.kernel.orghttps://git.kernel.org/stable/c/7f083faf59d14c04e01ec05a7507f036c965acf8
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-2026-23340

02 Description

03 Exploitation and scoring

04 Metadata

05 Affected products

06 References

02 Records

CVE-2026-23340

02 Description

03 Exploitation and scoring

04 Metadata

05 Affected products

06 References