CVE-2026-46168mptcp: fix scheduling with atomic in timestamp sockopt
Updated under an hour ago ()
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It affects Linux and 2 other products. Add what you run to find out whether that includes you.
No exploitation reported and no EPSS estimate yet.
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In the Linux kernel, the following vulnerability has been resolved: mptcp: fix scheduling with atomic in timestamp sockopt Using lock_sock_fast() (atomic context) around sock_set_timestamp() and sock_set_timestamping() is unsafe, as both helpers can sleep. Replace lock_sock_fast() with sleepable lock_sock()/release_sock() to avoid scheduling while atomic panic.
- 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 15, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Linux Linux linux:linux (from the name) | 9061f24bf82ec2e92dd1e7c10b98b680db023d31 builds before 0949d8bbbedbafe0136a1723c41eb823c2f1e09d; from 9061f24bf82ec2e92dd1e7c10b98b680db023d31 before e792cfb6aeaf65612cdf8e3ac431d65e66283654; from 9061f24bf82ec2e92dd1e7c10b98b680db023d31 before ebeb70e29e37cfce899309cc2665a3bfe960ed94; from 9061f24bf82ec2e92dd1e7c10b98b680db023d31 before b157dab93a7af44a84e78cf0cb311dde475cff5b; 9061f24bf82ec2e92dd1e7c10b98b680db023d31 builds before 8a005fe451c73fd2b3d1faa5643c11e6bd07acfc; 9061f24bf82ec2e92dd1e7c10b98b680db023d31 builds before 7eb513b42721bee4b96da69f6188d5a7783f210d; from 9061f24bf82ec2e92dd1e7c10b98b680db023d31 before b5c52908d52c6c8eb8933264aa6087a0600fd892 | CNA record |
Siemens SIMATIC S7-1500 TM MFP - GNU/Linux subsystem siemens:simatic_s7_1500_tm_mfp_gnu_linux_subsystem (from the name) | all versions | CISA ADP |
linux linux_kernel linux:linux_kernel | from 5.14 before 5.15.209; from 5.16 before 6.1.175; from 6.2 before 6.6.140; from 6.7 before 6.12.88; from 6.13 before 6.18.30; from 6.19 before 7.0.7; 7.1 | NVD |
References
- https://git.kernel.org/stable/c/0949d8bbbedbafe0136a1723c41eb823c2f1e09dpatch
- https://git.kernel.org/stable/c/e792cfb6aeaf65612cdf8e3ac431d65e66283654patch
- https://git.kernel.org/stable/c/ebeb70e29e37cfce899309cc2665a3bfe960ed94patch
- https://git.kernel.org/stable/c/b157dab93a7af44a84e78cf0cb311dde475cff5bpatch
- https://git.kernel.org/stable/c/8a005fe451c73fd2b3d1faa5643c11e6bd07acfcpatch
- https://git.kernel.org/stable/c/7eb513b42721bee4b96da69f6188d5a7783f210dpatch
- https://git.kernel.org/stable/c/b5c52908d52c6c8eb8933264aa6087a0600fd892patch
- https://cert-portal.siemens.com/productcert/html/ssa-784472.html
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.