Description

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

afs: Increase buffer size in afs_update_volume_status()

The max length of volume->vid value is 20 characters. So increase idbuf[] size up to 24 to avoid overflow.

Found by Linux Verification Center (linuxtesting.org) with SVACE.

[DH: Actually, it's 20 + NUL, so increase it to 24 and use snprintf()]

Metrics

CVSS 3.1 7.8/10CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Vendor	Product	Versions
Linux	Linux	>= d2ddc776a4581d900fc3bdc7803b403daae64d88, < 5c27d85a69fa16a08813ba37ddfb4bbc9a1ed6b5; >= d2ddc776a4581d900fc3bdc7803b403daae64d88, < d9b5e2b7a8196850383c70d099bfd39e81ab6637; >= d2ddc776a4581d900fc3bdc7803b403daae64d88, < e56662160fc24d28cb75ac095cc6415ae1bda43e; >= d2ddc776a4581d900fc3bdc7803b403daae64d88, < e8530b170e464017203e3b8c6c49af6e916aece1; >= d2ddc776a4581d900fc3bdc7803b403daae64d88, < 6e6065dd25b661420fac19c34282b6c626fcd35e; >= d2ddc776a4581d900fc3bdc7803b403daae64d88, < d34a5e57632bb5ff825196ddd9a48ca403626dfa; >= d2ddc776a4581d900fc3bdc7803b403daae64d88, < 6ea38e2aeb72349cad50e38899b0ba6fbcb2af3d
Linux	Linux	4.15