01 Record

CVE-2023-54269

SUNRPC: double free xprt_ctxt while still in use

CriticalPUBLISHEDCNA: Linux

CNA base score9.8 CVSS v3.xCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

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02 Description

SUNRPC: double free xprt_ctxt while still in use

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.
AutomatableyesAn attacker can reliably automate reconnaissance through exploitation, so this scales.
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

0.54% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 45.6% of scored records. A rank, not a probability.

NVD base score

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

NVD CVSS vector

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

NVD analysis status

Deferred. NVD last modified this record on 2026-10-15.

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

2025-12-30 12:16Z10 MO AGO

Last updated

2026-10-15 21:41Z14 DAYS AGO

Reserved

2025-12-30

Assigning CNA

Linux

Record state

PUBLISHED

Severity

Critical (CVSS 9.8)

CNA CVSS vector

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

Weaknesses

CWE-415Double FreeVariant

Data version

5.2

Document digest

3dfc2b3211eb42a85bc96fb176011cbf84a7f2e5b3c518d4b5db72c105d5bbd0

05 Affected products

VendorProductVersionsPlatforms

LinuxLinuxf5e13d700a4d40ccde3d36e383f9247dcb3c1d2d to < 7851771789e87108a92697194105ef0c9307dc5e, 773f91b2cf3f52df0d7508fdbf60f37567cdaee4 to < fd86534872f445f54dc01e7db001e25eadf063a8, 773f91b2cf3f52df0d7508fdbf60f37567cdaee4 to < e0c648627322a4c7e018e5c7f837c3c03e297dbb, 773f91b2cf3f52df0d7508fdbf60f37567cdaee4 to < eb8d3a2c809abd73ab0a060fe971d6b9019aa3c1, 11fab500f86403b2ebf6795feeade6e10302e448, 5.15.35 to < 5.15.113, 5.17.4 to < 5.18, 5.18—

06 References

git.kernel.orghttps://git.kernel.org/stable/c/7851771789e87108a92697194105ef0c9307dc5e
git.kernel.orghttps://git.kernel.org/stable/c/fd86534872f445f54dc01e7db001e25eadf063a8
git.kernel.orghttps://git.kernel.org/stable/c/e0c648627322a4c7e018e5c7f837c3c03e297dbb
git.kernel.orghttps://git.kernel.org/stable/c/eb8d3a2c809abd73ab0a060fe971d6b9019aa3c1

07 Fixed in

Debian 12

linux
Fixed in 6.1.37-1

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

Debian 13

linux
Fixed in 6.3.7-1

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

Debian 14

linux
Fixed in 6.3.7-1

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