CVE-2022-49807

/// Technical description

In the Linux kernel, the following vulnerability has been resolved:

nvmet: fix a memory leak in nvmet_auth_set_key

When changing dhchap secrets we need to release the old

secrets as well.

kmemleak complaint:

--

unreferenced object 0xffff8c7f44ed8180 (size 64):

comm "check", pid 7304, jiffies 4295686133 (age 72034.246s)

hex dump (first 32 bytes):

44 48 48 43 2d 31 3a 30 30 3a 4c 64 4c 4f 64 71 DHHC-1:00:LdLOdq

79 56 69 67 77 48 55 32 6d 5a 59 4c 7a 35 59 38 yVigwHU2mZYLz5Y8

backtrace:

[<00000000b6fc5071>] kstrdup+0x2e/0x60

[<00000000f0f4633f>] 0xffffffffc0e07ee6

[<0000000053006c05>] 0xffffffffc0dff783

[<00000000419ae922>] configfs_write_iter+0xb1/0x120

[<000000008183c424>] vfs_write+0x2be/0x3c0

[<000000009005a2a5>] ksys_write+0x5f/0xe0

[<00000000cd495c89>] do_syscall_64+0x38/0x90

[<00000000f2a84ac5>] entry_SYSCALL_64_after_hwframe+0x63/0xcd

/// Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

/// References