01 Record

CVE-2026-43494

net/rds: reset op_nents when zerocopy page pin fails

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

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02 Description

net/rds: reset op_nents when zerocopy page pin fails

03 Exploitation and scoring

Exploitation

Assessed, none found. CISA's assessment recorded neither public exploit code nor evidence of exploitation when it was made.

SSVC decision

ExploitationnoneCISA recorded no public exploit code and no evidence of exploitation.
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

0.41% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 35.0% 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 2026-10-19.

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 10:49Z5 MO AGO

Last updated

2026-10-19 19:26Z10 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-415Double FreeVariant
CWE-1341Multiple Releases of Same Resource or HandleBase

Data version

5.2

Document digest

4d3677469443b94a7c8b6dd476639abb3468baa19fe7e4c00a41c41ddb2a5e04

05 Affected products

VendorProductVersionsPlatforms

LinuxLinux0cebaccef3acbdfbc2d85880a2efb765d2f4e2e3 to < c6e51512a784c4a7b86e1a044988696e3b3721fa, 0cebaccef3acbdfbc2d85880a2efb765d2f4e2e3 to < 03014551938a0887fa55f18ce49b70158a9c0113, 0cebaccef3acbdfbc2d85880a2efb765d2f4e2e3 to < d84ce1786ce40fdd3dd98db47aec5527817e1ef6, 0cebaccef3acbdfbc2d85880a2efb765d2f4e2e3 to < 9115669faedccdda100428e2d26fd0aac8c50799, 0cebaccef3acbdfbc2d85880a2efb765d2f4e2e3 to < 0bbbff00a15b1df2cac9014d6cf4b6890f473353, 0cebaccef3acbdfbc2d85880a2efb765d2f4e2e3 to < 640e37f58f991546a87540d067279c2c1fa9fe51, 0cebaccef3acbdfbc2d85880a2efb765d2f4e2e3 to < 290e833d1acb1093bc121fcdc97f5e6161157479, 0cebaccef3acbdfbc2d85880a2efb765d2f4e2e3 to < e174929793195e0cd6a4adb0cad731b39f9019b4, 4.17—

06 References

git.kernel.orghttps://git.kernel.org/stable/c/c6e51512a784c4a7b86e1a044988696e3b3721fa
git.kernel.orghttps://git.kernel.org/stable/c/03014551938a0887fa55f18ce49b70158a9c0113
git.kernel.orghttps://git.kernel.org/stable/c/d84ce1786ce40fdd3dd98db47aec5527817e1ef6
git.kernel.orghttps://git.kernel.org/stable/c/9115669faedccdda100428e2d26fd0aac8c50799
git.kernel.orghttps://git.kernel.org/stable/c/0bbbff00a15b1df2cac9014d6cf4b6890f473353
git.kernel.orghttps://git.kernel.org/stable/c/640e37f58f991546a87540d067279c2c1fa9fe51
git.kernel.orghttps://git.kernel.org/stable/c/290e833d1acb1093bc121fcdc97f5e6161157479
git.kernel.orghttps://git.kernel.org/stable/c/e174929793195e0cd6a4adb0cad731b39f9019b4
github.comhttps://github.com/v12-security/pocs/tree/main/pintheft
www.openwall.comhttp://www.openwall.com/lists/oss-security/2026/05/21/2
access.redhat.comhttps://access.redhat.com/security/cve/CVE-2026-43494vdb-entryx_refsource_REDHAT
bugzilla.redhat.comRHBZ#2480434https://bugzilla.redhat.com/show_bug.cgi?id=2480434issue-trackingx_refsource_REDHAT
security.access.redhat.comhttps://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-43494.jsonx_sadp-csaf-vex

07 Fixed in

Debian 12

linux
Fixed in 6.1.176-1

Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.

Debian 13

linux
Fixed in 6.12.90-2

Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.

Debian 14

linux
Fixed in 7.0.10-1

Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.