CVE-2021-27363
- State
- Published
- Severity
- Not scored
- Published
- Mar 7, 2021
- Updated
- Aug 3, 2024
- Reserved
- Feb 17, 2021
Description
An issue was discovered in the Linux kernel through 5.11.3. A kernel pointer leak can be used to determine the address of the iscsi_transport structure. When an iSCSI transport is registered with the iSCSI subsystem, the transport's handle is available to unprivileged users via the sysfs file system, at /sys/class/iscsi_transport/$TRANSPORT_NAME/handle. When read, the show_transport_handle function (in drivers/scsi/scsi_transport_iscsi.c) is called, which leaks the handle. This handle is actually the pointer to an iscsi_transport struct in the kernel module's global variables.
Scores
The record has no CVSS score.
Weaknesses
The record names no weakness.
Affected Products
| Product | Versions |
|---|---|
n/an/a |
|
References
- http://www.openwall.com/lists/oss-security/2021/03/06/1
- https://bugzilla.suse.com/show_bug.cgi?id=1182716
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=688e8128b7a92df982709a4137ea4588d16f24aa
- [debian-lts-announce] 20210309 [SECURITY] [DLA 2586-1] linux security updatemailing-list
- https://blog.grimm-co.com/2021/03/new-old-bugs-in-linux-kernel.html
- [debian-lts-announce] 20210330 [SECURITY] [DLA 2610-1] linux-4.19 security updatemailing-list
- http://packetstormsecurity.com/files/162117/Kernel-Live-Patch-Security-Notice-LSN-0075-1.html
- https://security.netapp.com/advisory/ntap-20210409-0001/
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