CVE-2026-46053
What it is
In the Linux kernel, the following vulnerability has been resolved: net: rds: fix MR cleanup on copy error __rds_rdma_map() hands sg/pages ownership to the transport after get_mr() succeeds. If copying the generated cookie back to user space fails after that point, the error path must not free those resources again before dropping the MR reference. Remove the duplicate unpin/free from the put_user() failure branch so that MR teardown is handled only through the existing final cleanup path.
At a glance
- Exploitability
- Can be exploited locally on the machine with a low-privilege account. High risk of data exposure, data tampering, service disruption.
- Exploit odds
- 0.1% chance of exploitation in the next 30 days (EPSS).
- Fix
- A patch, advisory or fixed version is referenced. Upgrade or apply it.
Timeline
- PublishedDisclosed publicly on CVE.org and NVD
- Last updatedMost recent change to the record
Why it ranks here
- Exploited in the wild: no, CISA does not list it.
- Exploit odds: 0.1% in the next 30 days (EPSS).
- Severity: 7.8 HIGH (CVSS).
- Fix: a patch or advisory is linked.
Details
- Published
- Last modified
- Exploit probability
- 0.1% · EPSS, next 30 days
- Record status
- Analyzed
Affected
- Linux Kernel < 5.10.258
- Linux Kernel < 5.15.209
- Linux Kernel < 6.1.175
- Linux Kernel < 6.6.140
- Linux Kernel < 6.12.86
- Linux Kernel < 6.18.27
- Linux Kernel < 7.0.4
- Linux Kernel 5.6
Attack profile CVSS 3.1 · 7.8
- Attack vector
- Local
- Complexity
- Low
- Privileges needed
- Low
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- High
- Availability
- High
Raw vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Is it in your code?
Hand this to your coding agent. It searches your project for the affected products and checks versions. Nothing leaves your machine.
Read https://cve-list.com/agent/cve/CVE-2026-46053.md and follow it. Check whether this project is affected by CVE-2026-46053. Read only. Don't change anything and don't upload my code. Tell me yes, no or not sure, with the file as proof.
Fix and advisories
- https://git.kernel.org/stable/c/033370ffb3c9c0264d19f8ba9ef769523266589a
- https://git.kernel.org/stable/c/106dc689206610cfa2098f593fdd1e020c997835
- https://git.kernel.org/stable/c/8141a2dc70080eda1aedc0389ed2db2b292af5bd
- https://git.kernel.org/stable/c/8fdbb6262a4a3ed44a0830a7793903b54bb27bdc
- https://git.kernel.org/stable/c/91a44b406bc1f9e1c5da0cb7d0d5991b43b79147
- https://git.kernel.org/stable/c/b3cb8cae530b2727d8245684148bb49425f6765c
- https://git.kernel.org/stable/c/d95cea9298be1ba8876e3f156be96d3a492085ca
- https://git.kernel.org/stable/c/ec55a86f7fba7d9111df94b9c11a4755ed492995
References
- https://git.kernel.org/stable/c/033370ffb3c9c0264d19f8ba9ef769523266589a
- https://git.kernel.org/stable/c/106dc689206610cfa2098f593fdd1e020c997835
- https://git.kernel.org/stable/c/8141a2dc70080eda1aedc0389ed2db2b292af5bd
- https://git.kernel.org/stable/c/8fdbb6262a4a3ed44a0830a7793903b54bb27bdc
- https://git.kernel.org/stable/c/91a44b406bc1f9e1c5da0cb7d0d5991b43b79147
- https://git.kernel.org/stable/c/b3cb8cae530b2727d8245684148bb49425f6765c
- https://git.kernel.org/stable/c/d95cea9298be1ba8876e3f156be96d3a492085ca
- https://git.kernel.org/stable/c/ec55a86f7fba7d9111df94b9c11a4755ed492995