CVE-2025-40248

Ecosystem	Package	Version

Vulnerabilities

CVE-2025-40248

In the Linux kernel, the following vulnerability has been resolved: vsock: Ignore signal/timeout on connect() if already established During connect(), acting on a signal/timeout by disconnecting an already established socket leads to several issues: 1. connect() invoking vsock_transport_cancel_pkt() -> virtio_transport_purge_skbs() may race with sendmsg() invoking virtio_transport_get_credit(). This results in a permanently elevated `vvs->bytes_unsent`. Which, in turn, confuses the SOCK_LINGER handling. 2. connect() resetting a connected socket's state may race with socket being placed in a sockmap. A disconnected socket remaining in a sockmap breaks sockmap's assumptions. And gives rise to WARNs. 3. connect() transitioning SS_CONNECTED -> SS_UNCONNECTED allows for a transport change/drop after TCP_ESTABLISHED. Which poses a problem for any simultaneous sendmsg() or connect() and may result in a use-after-free/null-ptr-deref. Do not disconnect socket on signal/timeout. Keep the logic for unconnected sockets: they don't linger, can't be placed in a sockmap, are rejected by sendmsg(). [1]: https://lore.kernel.org/netdev/e07fd95c-9a38-4eea-9638-133e38c2ec9b@rbox.co/ [2]: https://lore.kernel.org/netdev/20250317-vsock-trans-signal-race-v4-0-fc8837f3f1d4@rbox.co/ [3]: https://lore.kernel.org/netdev/60f1b7db-3099-4f6a-875e-af9f6ef194f6@rbox.co/

Published Dec 5, 2025

https://lore.kernel.org/linux-cve-announce/2025120430-CVE-2025-40248-506e@gregkh/

CVSS ScoreLow

2.0


rpm	kernel	3.10.0-1062.0.0.0.1.el7
rpm	kernel	3.10.0-1062.1.1.0.1.el7
rpm	kernel	3.10.0-1062.1.1.el7
rpm	kernel	3.10.0-1062.1.2.0.1.el7
rpm	kernel	3.10.0-1062.1.2.el7
rpm	kernel	3.10.0-1062.12.1.0.1.el7
rpm	kernel	3.10.0-1062.12.1.el7
rpm	kernel	3.10.0-1062.18.1.0.1.el7
rpm	kernel	3.10.0-1062.18.1.el7
rpm	kernel	3.10.0-1062.4.1.0.1.el7
rpm	kernel	3.10.0-1062.4.1.el7
rpm	kernel	3.10.0-1062.4.2.el7
rpm	kernel	3.10.0-1062.4.3.0.1.el7
rpm	kernel	3.10.0-1062.4.3.el7
rpm	kernel	3.10.0-1062.7.1.0.1.el7
rpm	kernel	3.10.0-1062.7.1.el7
rpm	kernel	3.10.0-1062.9.1.0.1.el7
rpm	kernel	3.10.0-1062.9.1.el7
rpm	kernel	3.10.0-1062.el7
rpm	kernel	3.10.0-1127.0.0.0.1.el7
rpm	kernel	3.10.0-1127.10.1.0.1.el7
rpm	kernel	3.10.0-1127.10.1.el7
rpm	kernel	3.10.0-1127.13.1.0.1.el7
rpm	kernel	3.10.0-1127.13.1.el7
rpm	kernel	3.10.0-1127.18.2.0.1.el7
rpm	kernel	3.10.0-1127.18.2.el7
rpm	kernel	3.10.0-1127.19.1.0.1.el7
rpm	kernel	3.10.0-1127.19.1.0.2.el7
rpm	kernel	3.10.0-1127.19.1.el7
rpm	kernel	3.10.0-1127.8.2.0.1.el7
rpm	kernel	3.10.0-1127.8.2.el7
rpm	kernel	3.10.0-1127.el7
rpm	kernel	3.10.0-1136.el7
rpm	kernel	3.10.0-1160.102.1.0.1.el7
rpm	kernel	3.10.0-1160.102.1.0.2.el7
rpm	kernel	3.10.0-1160.105.1.0.1.el7
rpm	kernel	3.10.0-1160.105.1.0.2.el7
rpm	kernel	3.10.0-1160.108.1.0.1.el7
rpm	kernel	3.10.0-1160.108.1.0.2.el7
rpm	kernel	3.10.0-1160.11.1.0.1.el7
rpm	kernel	3.10.0-1160.11.1.el7
rpm	kernel	3.10.0-1160.114.2.0.1.el7
rpm	kernel	3.10.0-1160.114.2.0.2.el7
rpm	kernel	3.10.0-1160.118.1.0.1.el7
rpm	kernel	3.10.0-1160.118.1.0.2.el7
rpm	kernel	3.10.0-1160.119.1.0.1.el7
rpm	kernel	3.10.0-1160.119.1.0.2.el7
rpm	kernel	3.10.0-1160.119.1.0.3.el7
rpm	kernel	3.10.0-1160.119.1.0.4.el7
rpm	kernel	3.10.0-1160.119.1.0.5.el7

Ecosystem	Package	Version

CVE-2025-40248 | Components Impacted | Sonatype Guide | Sonatype Guide

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CVE-2025-40248