UBUNTU-CVE-2025-38617
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.
02 / AFFECTED SOFTWARE
Affected packages
6 explicit affected versions
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111 explicit affected versions
64 explicit affected versions
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64 explicit affected versions
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135 explicit affected versions
109 explicit affected versions
156 explicit affected versions
10 explicit affected versions
30 explicit affected versions
14 explicit affected versions
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78 explicit affected versions
11 explicit affected versions
1 explicit affected versions
58 explicit affected versions
113 explicit affected versions
4 explicit affected versions
24 explicit affected versions
63 explicit affected versions
03 / CONNECTIONS
Connected vulnerabilities
04 / EVIDENCE
Source records
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.
05 / REFERENCES
Further evidence
- https://git.kernel.org/linus/01d3c8417b9c1b884a8a981a3b886da556512f36
- https://git.kernel.org/stable/c/01d3c8417b9c1b884a8a981a3b886da556512f36
- https://git.kernel.org/stable/c/7de07705007c7e34995a5599aaab1d23e762d7ca
- https://git.kernel.org/stable/c/88caf46db8239e6471413d28aabaa6b8bd552805
- https://git.kernel.org/stable/c/e50ccfaca9e3c671cae917dcb994831a859cf588
- https://git.kernel.org/stable/c/f1791fd7b845bea0ce9674fcf2febee7bc87a893
- https://git.kernel.org/stable/c/f2e8fcfd2b1bc754920108b7f2cd75082c5a18df
- https://ubuntu.com/security/CVE-2025-38617
- https://ubuntu.com/security/notices/USN-7791-1
- https://ubuntu.com/security/notices/USN-7791-2
- https://ubuntu.com/security/notices/USN-7791-3
- https://ubuntu.com/security/notices/USN-7791-4
- https://ubuntu.com/security/notices/USN-7792-1
- https://ubuntu.com/security/notices/USN-7792-2
- https://ubuntu.com/security/notices/USN-7792-3
- https://ubuntu.com/security/notices/USN-7793-1
- https://ubuntu.com/security/notices/USN-7793-2
- https://ubuntu.com/security/notices/USN-7793-3
- https://ubuntu.com/security/notices/USN-7793-4
- https://ubuntu.com/security/notices/USN-7793-5
- https://ubuntu.com/security/notices/USN-7795-1
- https://ubuntu.com/security/notices/USN-7795-2
- https://ubuntu.com/security/notices/USN-7795-3
- https://ubuntu.com/security/notices/USN-7795-4
- https://ubuntu.com/security/notices/USN-7795-5
- https://ubuntu.com/security/notices/USN-7796-1
- https://ubuntu.com/security/notices/USN-7796-2
- https://ubuntu.com/security/notices/USN-7796-3
- https://ubuntu.com/security/notices/USN-7796-4
- https://ubuntu.com/security/notices/USN-7797-1
- https://ubuntu.com/security/notices/USN-7797-2
- https://ubuntu.com/security/notices/USN-7797-3
- https://ubuntu.com/security/notices/USN-7798-1
- https://ubuntu.com/security/notices/USN-7799-1
- https://ubuntu.com/security/notices/USN-7800-1
- https://ubuntu.com/security/notices/USN-7801-1
- https://ubuntu.com/security/notices/USN-7801-2
- https://ubuntu.com/security/notices/USN-7801-3
- https://ubuntu.com/security/notices/USN-7808-1
- https://ubuntu.com/security/notices/USN-7808-2
- https://ubuntu.com/security/notices/USN-7809-1
- https://ubuntu.com/security/notices/USN-7810-1
- https://ubuntu.com/security/notices/USN-7810-2
- https://ubuntu.com/security/notices/USN-7810-3
- https://ubuntu.com/security/notices/USN-7811-1
- https://ubuntu.com/security/notices/USN-7819-1
- https://ubuntu.com/security/notices/USN-7819-2
- https://ubuntu.com/security/notices/USN-7820-1
- https://ubuntu.com/security/notices/USN-7821-1
- https://ubuntu.com/security/notices/USN-7854-1
- https://ubuntu.com/security/notices/USN-7865-1
- https://ubuntu.com/security/notices/USN-7933-1
- https://www.cve.org/CVERecord?id=CVE-2025-38617