CVE-2026-23066
7.8 HIGHIn the Linux kernel, the following vulnerability has been resolved: rxrpc: Fix recvmsg() unconditional requeue If rxrpc_recvmsg() fails...
Published: 2026-02-04 · Last updated: 2026-06-01
Severity and scoring
- CVSS
- 7.8 HIGH
- Vector
- CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- CWE
- CWE-674
Affected products
| Vendor | Product |
|---|---|
| linux | linux_kernel |
Description
In the Linux kernel, the following vulnerability has been resolved: rxrpc: Fix recvmsg() unconditional requeue If rxrpc_recvmsg() fails because MSG_DONTWAIT was specified but the call at the front of the recvmsg queue already has its mutex locked, it requeues the call - whether or not the call is already queued. The call may be on the queue because MSG_PEEK was also passed and so the call was not dequeued or because the I/O thread requeued it. The unconditional requeue may then corrupt the recvmsg queue, leading to things like UAFs or refcount underruns. Fix this by only requeuing the call if it isn't already on the queue - and moving it to the front if it is already queued. If we don't queue it, we have to put the ref we obtained by dequeuing it. Also, MSG_PEEK doesn't dequeue the call so shouldn't call rxrpc_notify_socket() for the call if we didn't use up all the data on the queue, so fix that also.
Source: NVD
References
- [NVD]https://nvd.nist.gov/vuln/detail/CVE-2026-23066
- [Other]https://git.kernel.org/stable/c/0464bf75590da75b8413c3e758c04647b4cdb3c6
- [Patch]https://git.kernel.org/stable/c/2c28769a51deb6022d7fbd499987e237a01dd63a
- [Other]https://git.kernel.org/stable/c/8fd3b5e297854a4da0f273169baf4b1b7b257b97
- [Patch]https://git.kernel.org/stable/c/930114425065f7ace6e0c0630fab4af75e059ea8
- [Other]https://git.kernel.org/stable/c/c198628f3fca5c874d93874c233014d336e09f64
- [Other]https://git.kernel.org/stable/c/c6cebcb4e0b3140ec2ace45c020a9049527385d1
- [Other]https://git.kernel.org/stable/c/cf969bddd6e69c5777fa89dc88402204e72f312a
Related CVEs
Same vendor
- CVE-2026-46273 — In the Linux kernel, the following vulnerability has been resolved: ibmveth: Disable GSO for packets with small MSS Some physical adapt... (8.6 HIGH)
- CVE-2026-46272 — In the Linux kernel, the following vulnerability has been resolved: coresight: tmc-etr: Fix race condition between sysfs and perf mode ... (4.7 MEDIUM)
- CVE-2026-46271 — In the Linux kernel, the following vulnerability has been resolved: wifi: ath12k: do WoW offloads only on primary link In case of multi... (7.8 HIGH)
- CVE-2026-46270 — In the Linux kernel, the following vulnerability has been resolved: power: supply: rt9455: Fix use-after-free in power_supply_changed() ... (8.4 HIGH)
- CVE-2026-46269 — In the Linux kernel, the following vulnerability has been resolved: pinctrl: canaan: k230: Fix NULL pointer dereference when parsing dev... (5.5 MEDIUM)
Same CWE
- CVE-2025-7010 — Stack overflow vulnerability due to uncontrolled recursion in Avast Antivirus when scanning a malformed PDF file may allow Denial-of-Serv... (5.5 MEDIUM)
- CVE-2025-7005 — Uncontrolled recursion vulnerability in Avast Antivirus when scanning a malformed Windows PE file may allow Denial-of-Service of the anti... (5.5 MEDIUM)
- CVE-2026-4870 — IBM Qiskit SDK 0.43.0 through 2.5.0 could allow an attacker to trigger a segmentation fault leading to a denial of service due to uncontr... (7.5 HIGH)
- CVE-2026-48734 — ImageMagick is free and open-source software used for editing and manipulating digital images (5.5 MEDIUM)
- CVE-2026-46557 — ImageMagick is free and open-source software used for editing and manipulating digital images (6.2 MEDIUM)