CVE-2021-47049
In the Linux kernel, the following vulnerability has been resolved: Drivers: hv: vmbus: Use after free in __vmbus_open() The "open_info" variable is added to the &vmbus_connection.chn_msg_list, but the error handling frees "open_info" without removing…
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.23%). 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: Drivers: hv: vmbus: Use after free in __vmbus_open() The "open_info" variable is added to the &vmbus_connection.chn_msg_list, but the error handling frees "open_info" without removing it from the list. This will result in a use after free. First remove it from the list, and then free it.
- CVSS 3.1
- 7.8 HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 0.23% probability · 14th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-416
- Affected
- linux/linux kernel
- Source
- 416baaa9-dc9f-4396-8d5f-8c081fb06d67
References
- https://git.kernel.org/stable/c/2728f289b3270b0e273292b46c534421a33bbfd5Patch
- https://git.kernel.org/stable/c/3e9bf43f7f7a46f21ec071cb47be92d0874c48daPatch
- https://git.kernel.org/stable/c/d5c7b42c9f56ca46b286daa537d181bd7f69214fPatch
- https://git.kernel.org/stable/c/f37dd5d1b5d38a79a4f7b8dd7bbb705505f05560Patch
- https://git.kernel.org/stable/c/2728f289b3270b0e273292b46c534421a33bbfd5Patch
- https://git.kernel.org/stable/c/3e9bf43f7f7a46f21ec071cb47be92d0874c48daPatch
- https://git.kernel.org/stable/c/d5c7b42c9f56ca46b286daa537d181bd7f69214fPatch
- https://git.kernel.org/stable/c/f37dd5d1b5d38a79a4f7b8dd7bbb705505f05560Patch
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.