In the Linux kernel, the following vulnerability has been resolved:
net/sunrpc: fix reference count leaks in rpc_sysfs_xprt_state_change
The refcount leak issues take place in an error handling path. When the
3rd argument buf doesn’t match with “offline”, “online” or “remove”, the
function simply returns -EINVAL and forgets to decrease the reference
count of a rpc_xprt object and a rpc_xprt_switch object increased by
rpc_sysfs_xprt_kobj_get_xprt() and
rpc_sysfs_xprt_kobj_get_xprt_switch(), causing reference count leaks of
both unused objects.
Fix this issue by jumping to the error handling path labelled with
out_put when buf matches none of “offline”, “online” or “remove”.
OS | Version | Architecture | Package | Version | Filename |
---|---|---|---|---|---|
ubuntu | 20.04 | noarch | linux | < any | UNKNOWN |
ubuntu | 20.04 | noarch | linux-aws | < any | UNKNOWN |
ubuntu | 20.04 | noarch | linux-azure | < any | UNKNOWN |
ubuntu | 20.04 | noarch | linux-bluefield | < any | UNKNOWN |
ubuntu | 20.04 | noarch | linux-gcp | < any | UNKNOWN |
ubuntu | 20.04 | noarch | linux-gkeop | < any | UNKNOWN |
ubuntu | 20.04 | noarch | linux-ibm | < any | UNKNOWN |
ubuntu | 20.04 | noarch | linux-intel-iotg-5.15 | < any | UNKNOWN |
ubuntu | 20.04 | noarch | linux-iot | < any | UNKNOWN |
ubuntu | 20.04 | noarch | linux-kvm | < any | UNKNOWN |
git.kernel.org/linus/776d794f28c95051bc70405a7b1fa40115658a18 (5.17-rc2)
git.kernel.org/stable/c/4b22aa42bd4d2d630ef1854c139275c3532937cb
git.kernel.org/stable/c/5f6024c05a2c0fdd180b29395aaf686d25af3a0f
git.kernel.org/stable/c/776d794f28c95051bc70405a7b1fa40115658a18
launchpad.net/bugs/cve/CVE-2021-47624
nvd.nist.gov/vuln/detail/CVE-2021-47624
security-tracker.debian.org/tracker/CVE-2021-47624
www.cve.org/CVERecord?id=CVE-2021-47624