NULL pointer dereference in Linux
CVE-2022-48816
In the Linux kernel, the following vulnerability has been resolved: SUNRPC: lock against ->sock changing during sysfs read ->sock can be set to NULL asynchronously unless ->recv_mutex is held. So it is important to hold that mutex. Otherwise a sysfs read can trigger an oops. Commit 17f09d3f619a ("SUNRPC: Check if the xprt is connected before handling sysfs reads") appears to attempt to fix this problem, but it only narrows the race window.
EPSS: 0.003 (17.0th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
Affected products
- Linux — versions 0, 77876473912d1bf1ed16bffa1674e5ff0f499f25, a8482488a7d6d320f63a9ee1912dbb5ae5b80a61
- Linux Linux_kernel — versions 5.17
Weakness classification (CWE)
References
Frequently asked questions
- What is CVE-2022-48816?
- CVE-2022-48816 is a high-severity vulnerability in Linux, classified under NULL Pointer Dereference. CVSS score: 7.8/10. Published 2024-07-16.
- How severe is CVE-2022-48816?
- High severity. CVSS v3 base score is 7.8 out of 10.