Medium 5.5Published Apr 24, 2026

CVE-2026-31634rxrpc: fix reference count leak in rxrpc_server_keyring()

Updated under an hour ago (Oct 28, 2026, 7:00 AM ET)

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Exploited in the last 30 days

In the Linux kernel, the following vulnerability has been resolved: rxrpc: fix reference count leak in rxrpc_server_keyring() This patch fixes a reference count leak in rxrpc_server_keyring() by checking if rx->securities is already set.

CVSS: 5.5 MEDIUM (v3.1, NVD)CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Weakness (CWE): Not given
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: Linux
NVD analysis: Modified
Record last updated: Oct 14, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

Linux Linux linux:linux (from the name)	17926a79320afa9b95df6b977b40cca6d8713cea builds before 45d9584e51bdd61faf1900f82666d4ea6a85da72; from 17926a79320afa9b95df6b977b40cca6d8713cea before fc76d0bd00850b7372f0a4a319c0c60f80487632; from 17926a79320afa9b95df6b977b40cca6d8713cea before c6d9ea26cf8756ad6f162578e94a5f82f6fae3c2; 17926a79320afa9b95df6b977b40cca6d8713cea builds before 9ce36d28f67c2a477a7e2f03480de3f6783fb363; 17926a79320afa9b95df6b977b40cca6d8713cea builds before 12de9e0e0b0b7058be7dfb8a5927eb565bc25780; 17926a79320afa9b95df6b977b40cca6d8713cea builds before 8ee931c3cd97f1c42b4fbf057f04b9dae45dfb7a; 17926a79320afa9b95df6b977b40cca6d8713cea builds before 139c750bf06649097d98b0bc41e2a678b4627e27; from 17926a79320afa9b95df6b977b40cca6d8713cea before f125846ee79fcae537a964ce66494e96fa54a6de	CNA record
Siemens SIMATIC S7-1500 CPU 1518-4 PN/DP MFP siemens:simatic_s7_1500_cpu_1518_4_pn_dp_mfp (from the name)	from V3.1.6	CISA ADP
Siemens SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP siemens:simatic_s7_1500_cpu_1518f_4_pn_dp_mfp (from the name)	from V3.1.6	CISA ADP
Siemens SIPLUS S7-1500 CPU 1518-4 PN/DP MFP siemens:siplus_s7_1500_cpu_1518_4_pn_dp_mfp (from the name)	from V3.1.6	CISA ADP
linux linux_kernel linux:linux_kernel	from 2.6.22.1 before 5.15.203; from 5.16 before 6.1.169; from 6.2 before 6.6.135; from 6.7 before 6.12.82; from 6.13 before 6.18.23; from 6.19 before 6.19.13; 2.6.22; 7.0; and 6 more ranges	NVD

References

References

https://git.kernel.org/stable/c/45d9584e51bdd61faf1900f82666d4ea6a85da72
https://git.kernel.org/stable/c/fc76d0bd00850b7372f0a4a319c0c60f80487632	patch
https://git.kernel.org/stable/c/c6d9ea26cf8756ad6f162578e94a5f82f6fae3c2	patch
https://git.kernel.org/stable/c/9ce36d28f67c2a477a7e2f03480de3f6783fb363	patch
https://git.kernel.org/stable/c/12de9e0e0b0b7058be7dfb8a5927eb565bc25780	patch
https://git.kernel.org/stable/c/8ee931c3cd97f1c42b4fbf057f04b9dae45dfb7a	patch
https://git.kernel.org/stable/c/139c750bf06649097d98b0bc41e2a678b4627e27	patch
https://git.kernel.org/stable/c/f125846ee79fcae537a964ce66494e96fa54a6de	patch
https://cert-portal.siemens.com/productcert/html/ssa-019113.html
https://cert-portal.siemens.com/productcert/html/ssa-082556.html
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The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.