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CVE-2022-50764

UnknownEPSS 0.21%

Last modified

CVE-2022-50764 is a vulnerability of currently unknown severity. In the Linux kernel, the following vulnerability has been resolved: ipv6/sit: use DEV_STATS_INC() to avoid data-races syzbot/KCSAN reported that multiple cpus are updating dev->stats.tx_error concurrently. This is because sit tunnels are NETIF_F_LLTX, meaning their ndo_start_xmit() is not protected by a spinlock. While original KCSAN report was about tx path, rx path has the same issue.. EPSS estimates a 0.21% chance of exploitation in the next 30 days.

Description

In the Linux kernel, the following vulnerability has been resolved: ipv6/sit: use DEV_STATS_INC() to avoid data-races syzbot/KCSAN reported that multiple cpus are updating dev->stats.tx_error concurrently. This is because sit tunnels are NETIF_F_LLTX, meaning their ndo_start_xmit() is not protected by a spinlock. While original KCSAN report was about tx path, rx path has the same issue.

Metrics

EPSS Probability
0.21%

11.1th percentile

Probability of exploitation in the next 30 days. Learn more

Affected Software

Source: CNA advisory (CVE.org). NVD analysis pending.

VendorProductVersions
LinuxLinux>= 8df40d1033d64597dcf1efd4f7547e817f7a953b, < 222cc04356984f3f98acfa756a69d4bed7c501ac; >= 8df40d1033d64597dcf1efd4f7547e817f7a953b, < 4eed93bb3e57b8cc78d17166a14e40a73276015a; >= 8df40d1033d64597dcf1efd4f7547e817f7a953b, < 207501a986831174df09a36a8cb62a28f92f0dc8; >= 8df40d1033d64597dcf1efd4f7547e817f7a953b, < cb34b7cf17ecf33499c9298943f85af247abc1e9
LinuxLinux2.6.37

References

Timeline

Published
Last Modified
Status
Deferred

Frequently Asked Questions

What is CVE-2022-50764?
In the Linux kernel, the following vulnerability has been resolved: ipv6/sit: use DEV_STATS_INC() to avoid data-races syzbot/KCSAN reported that multiple cpus are updating dev->stats.tx_error concurrently. This is because sit tunnels are NETIF_F_LLTX, meaning their ndo_start_xmit() is not protected by a spinlock. While original KCSAN report was about tx path, rx path has the same issue.
How severe is CVE-2022-50764?
Severity scoring for CVE-2022-50764 is pending analysis. The EPSS model estimates a 0.21% probability of exploitation in the next 30 days.
How do I fix CVE-2022-50764?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

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Source: NVD / NIST