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.
OS | Version | Architecture | Package | Version | Filename |
---|---|---|---|---|---|
ubuntu | 22.04 | noarch | linux | < any | UNKNOWN |
ubuntu | 22.04 | noarch | linux-aws | < any | UNKNOWN |
ubuntu | 20.04 | noarch | linux-aws-5.15 | < any | UNKNOWN |
ubuntu | 22.04 | noarch | linux-azure | < any | UNKNOWN |
ubuntu | 20.04 | noarch | linux-azure-5.15 | < any | UNKNOWN |
ubuntu | 22.04 | noarch | linux-azure-fde | < any | UNKNOWN |
ubuntu | 20.04 | noarch | linux-azure-fde-5.15 | < any | UNKNOWN |
ubuntu | 22.04 | noarch | linux-gcp | < any | UNKNOWN |
ubuntu | 20.04 | noarch | linux-gcp-5.15 | < any | UNKNOWN |
ubuntu | 22.04 | noarch | linux-gke | < any | UNKNOWN |
git.kernel.org/linus/b49ea673e119f59c71645e2f65b3ccad857c90ee (5.17-rc4)
git.kernel.org/stable/c/9482ab4540f5bcc869b44c067ae99b5fca16bd07
git.kernel.org/stable/c/b49ea673e119f59c71645e2f65b3ccad857c90ee
launchpad.net/bugs/cve/CVE-2022-48816
nvd.nist.gov/vuln/detail/CVE-2022-48816
security-tracker.debian.org/tracker/CVE-2022-48816
www.cve.org/CVERecord?id=CVE-2022-48816