CVE-2020-12464
usb_sg_cancel in drivers/usb/core/message.c in the Linux kernel before 5.6.8 has a use-after-free because a transfer occurs without a reference, aka CID-056ad39ee925.
02 / AFFECTED SOFTWARE
Affected packages
1 explicit affected versions
03 / CONNECTIONS
Connected vulnerabilities
04 / EVIDENCE
Source records
In usb_sg_cancel of message.c, there is a possible use-after-free due to improper locking. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation.
usb_sg_cancel in drivers/usb/core/message.c in the Linux kernel before 5.6.8 has a use-after-free because a transfer occurs without a reference, aka CID-056ad39ee925.
05 / REFERENCES
Further evidence
- https://android.googlesource.com/kernel/common/+/056ad39ee925
- https://source.android.com/security/bulletin/2020-08-01
- http://lists.opensuse.org/opensuse-security-announce/2020-06/msg00022.html
- https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.6.8
- https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=056ad39ee9253873522f6469c3364964a322912b
- https://github.com/torvalds/linux/commit/056ad39ee9253873522f6469c3364964a322912b
- https://lists.debian.org/debian-lts-announce/2020/06/msg00011.html
- https://lists.debian.org/debian-lts-announce/2020/06/msg00012.html
- https://lists.debian.org/debian-lts-announce/2020/06/msg00013.html
- https://lkml.org/lkml/2020/3/23/52
- https://patchwork.kernel.org/patch/11463781/
- https://security.netapp.com/advisory/ntap-20200608-0001/
- https://usn.ubuntu.com/4387-1/
- https://usn.ubuntu.com/4388-1/
- https://usn.ubuntu.com/4389-1/
- https://usn.ubuntu.com/4390-1/
- https://usn.ubuntu.com/4391-1/
- https://www.debian.org/security/2020/dsa-4698
- https://www.debian.org/security/2020/dsa-4699