CVE-2024-41005: netpoll: Fix race condition in netpoll_owner_active
First published: Fri Jul 12 2024(Updated: )
In the Linux kernel, the following vulnerability has been resolved: netpoll: Fix race condition in netpoll_owner_active KCSAN detected a race condition in netpoll: BUG: KCSAN: data-race in net_rx_action / netpoll_send_skb write (marked) to 0xffff8881164168b0 of 4 bytes by interrupt on cpu 10: net_rx_action (./include/linux/netpoll.h:90 net/core/dev.c:6712 net/core/dev.c:6822) <snip> read to 0xffff8881164168b0 of 4 bytes by task 1 on cpu 2: netpoll_send_skb (net/core/netpoll.c:319 net/core/netpoll.c:345 net/core/netpoll.c:393) netpoll_send_udp (net/core/netpoll.c:?) <snip> value changed: 0x0000000a -> 0xffffffff This happens because netpoll_owner_active() needs to check if the current CPU is the owner of the lock, touching napi->poll_owner non atomically. The ->poll_owner field contains the current CPU holding the lock. Use an atomic read to check if the poll owner is the current CPU.
Credit: 416baaa9-dc9f-4396-8d5f-8c081fb06d67 416baaa9-dc9f-4396-8d5f-8c081fb06d67
| Affected Software | Affected Version | How to fix |
|---|---|---|
| redhat/kernel | <5.10.221 | 5.10.221 |
| redhat/kernel | <5.15.162 | 5.15.162 |
| redhat/kernel | <6.1.96 | 6.1.96 |
| redhat/kernel | <6.6.36 | 6.6.36 |
| redhat/kernel | <6.9.7 | 6.9.7 |
| redhat/kernel | <6.10 | 6.10 |
| IBM Security Verify Governance - Identity Manager | <=ISVG 10.0.2 | |
| IBM Security Verify Governance, Identity Manager Software Stack | <=ISVG 10.0.2 | |
| IBM Security Verify Governance, Identity Manager Virtual Appliance | <=ISVG 10.0.2 | |
| IBM Security Verify Governance Identity Manager Container | <=ISVG 10.0.2 | |
| debian/linux | 5.10.223-1 5.10.234-1 6.1.129-1 6.1.128-1 6.12.21-1 6.12.22-1 | |
| debian/linux-6.1 | 6.1.129-1~deb11u1 |
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Reference Links
- https://git.kernel.org/stable/c/3f1a155950a1685ffd0fd7175b3f671da8771f3d
- https://git.kernel.org/stable/c/43c0ca793a18578a0f5b305dd77fcf7ed99f1265
- https://git.kernel.org/stable/c/96826b16ef9c6568d31a1f6ceaa266411a46e46c
- https://git.kernel.org/stable/c/a130e7da73ae93afdb4659842267eec734ffbd57
- https://git.kernel.org/stable/c/c2e6a872bde9912f1a7579639c5ca3adf1003916
- https://git.kernel.org/stable/c/efd29cd9c7b8369dfc7bcb34637e6bf1a188aa8e
- https://access.redhat.com/errata/RHSA-2024:7001
- https://access.redhat.com/errata/RHSA-2024:7000
- https://access.redhat.com/errata/RHSA-2024:8617
- https://bugzilla.redhat.com/show_bug.cgi?id=2297589
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2024-41005
- https://nvd.nist.gov/vuln/detail/CVE-2024-41005
- https://launchpad.net/bugs/cve/CVE-2024-41005
- https://security-tracker.debian.org/tracker/CVE-2024-41005
- https://ubuntu.com/security/CVE-2024-41005
- https://git.kernel.org/linus/c2e6a872bde9912f1a7579639c5ca3adf1003916
- https://www.ibm.com/support/pages/node/7230443 (Advisory)
Frequently Asked Questions
What is the severity of CVE-2024-41005?
CVE-2024-41005 has been classified as a moderate severity vulnerability affecting the Linux kernel.
How do I fix CVE-2024-41005?
To fix CVE-2024-41005, upgrade the Linux kernel to the recommended versions based on your distribution, such as 5.10.221 or higher for Red Hat.
What systems are affected by CVE-2024-41005?
CVE-2024-41005 affects Linux kernel versions prior to 5.10.221, 5.15.162, 6.1.96, 6.6.36, and additional versions listed for Debian.
What kind of vulnerability is CVE-2024-41005?
CVE-2024-41005 is a race condition vulnerability in the netpoll subsystem of the Linux kernel.
Is CVE-2024-41005 exploitable remotely?
CVE-2024-41005's exploitation potential may depend on network configurations and specific conditions within the affected systems.
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