High 7.8Published Aug 22, 2025

CVE-2025-38617net/packet: fix a race in packet_set_ring() and packet_notifier()

Updated under an hour ago (Oct 27, 2026, 6:10 PM ET)

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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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Exploited in the last 30 days

In the Linux kernel, the following vulnerability has been resolved: net/packet: fix a race in packet_set_ring() and packet_notifier() When packet_set_ring() releases po->bind_lock, another thread can run packet_notifier() and process an NETDEV_UP event. This race and the fix are both similar to that of commit 15fe076edea7 ("net/packet: fix a race in packet_bind() and packet_notifier()"). There too the packet_notifier NETDEV_UP event managed to run while a po->bind_lock critical section had to be temporarily released. And the fix was similarly to temporarily set po->num to zero to keep the socket unhooked until the lock is retaken. The po->bind_lock in packet_set_ring and packet_notifier precede the introduction of git history.

CVSS: 7.8 HIGH (v3.1, CNA)CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/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 15, 2026

Affected products

Affected products

Linux Linux linux:linux (from the name)	from 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before 18f13f2a83eb81be349a9757ba2141ff1da9ad73; from 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before 7da733f117533e9b2ebbd530a22ae4028713955c; from 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before ba2257034755ae773722f15f4c3ad1dcdad15ca9; from 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before 7de07705007c7e34995a5599aaab1d23e762d7ca; from 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before 88caf46db8239e6471413d28aabaa6b8bd552805; from 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before f2e8fcfd2b1bc754920108b7f2cd75082c5a18df; from 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before e50ccfaca9e3c671cae917dcb994831a859cf588; from 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before f1791fd7b845bea0ce9674fcf2febee7bc87a893; and 1 more ranges	CNA record
linux linux_kernel linux:linux_kernel	from 2.6.13 before 5.4.297; from 5.5 before 5.10.241; from 5.11 before 5.15.190; from 5.16 before 6.1.148; from 6.2 before 6.6.102; from 6.7 before 6.12.42; from 6.13 before 6.15.10; from 6.16 before 6.16.1; and 5 more ranges	NVD
debian debian_linux debian:debian_linux	11.0	NVD

References

References

https://git.kernel.org/stable/c/18f13f2a83eb81be349a9757ba2141ff1da9ad73	patch
https://git.kernel.org/stable/c/7da733f117533e9b2ebbd530a22ae4028713955c	patch
https://git.kernel.org/stable/c/ba2257034755ae773722f15f4c3ad1dcdad15ca9	patch
https://git.kernel.org/stable/c/7de07705007c7e34995a5599aaab1d23e762d7ca	patch
https://git.kernel.org/stable/c/88caf46db8239e6471413d28aabaa6b8bd552805	patch
https://git.kernel.org/stable/c/f2e8fcfd2b1bc754920108b7f2cd75082c5a18df	patch
https://git.kernel.org/stable/c/e50ccfaca9e3c671cae917dcb994831a859cf588	patch
https://git.kernel.org/stable/c/f1791fd7b845bea0ce9674fcf2febee7bc87a893	patch
https://git.kernel.org/stable/c/01d3c8417b9c1b884a8a981a3b886da556512f36	patch
https://blog.calif.io/p/a-race-within-a-race-exploiting-cve
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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.