CVE-2021-47624
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.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.24%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
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".
- CVSS 3.1
- 7.1 HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
- EPSS
- 0.24% probability · 15th percentile
- CISA KEV
- Not listed
- Affected
- linux/linux kernel
- Source
- 416baaa9-dc9f-4396-8d5f-8c081fb06d67
References
- https://git.kernel.org/stable/c/4b22aa42bd4d2d630ef1854c139275c3532937cbMailing List, Patch
- https://git.kernel.org/stable/c/5f6024c05a2c0fdd180b29395aaf686d25af3a0fMailing List, Patch
- https://git.kernel.org/stable/c/776d794f28c95051bc70405a7b1fa40115658a18Mailing List, Patch
- https://git.kernel.org/stable/c/4b22aa42bd4d2d630ef1854c139275c3532937cbMailing List, Patch
- https://git.kernel.org/stable/c/5f6024c05a2c0fdd180b29395aaf686d25af3a0fMailing List, Patch
- https://git.kernel.org/stable/c/776d794f28c95051bc70405a7b1fa40115658a18Mailing List, Patch
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.