title: afs: Increase buffer size in afs_update_volume_status()
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()]
affected:
{
product: Linux
vendor: Linux
defaultStatus: unaffected
repo: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
versions:
version: d2ddc776a458, lessThan: 5c27d85a69fa, status: affected, versionType: git
version: d2ddc776a458, lessThan: d9b5e2b7a819, status: affected, versionType: git
version: d2ddc776a458, lessThan: e56662160fc2, status: affected, versionType: git
version: d2ddc776a458, lessThan: e8530b170e46, status: affected, versionType: git
version: d2ddc776a458, lessThan: 6e6065dd25b6, status: affected, versionType: git
version: d2ddc776a458, lessThan: d34a5e57632b, status: affected, versionType: git
version: d2ddc776a458, lessThan: 6ea38e2aeb72, status: affected, versionType: git
}
{
product: Linux
vendor: Linux
defaultStatus: affected
repo: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
versions:
version: 4.15, status: affected
version: 0, lessThan: 4.15, status: unaffected, versionType: custom
version: 5.4.270, lessThanOrEqual: 5.4.*, status: unaffected, versionType: custom
version: 5.10.211, lessThanOrEqual: 5.10.*, status: unaffected, versionType: custom
version: 5.15.150, lessThanOrEqual: 5.15.*, status: unaffected, versionType: custom
version: 6.1.80, lessThanOrEqual: 6.1.*, status: unaffected, versionType: custom
version: 6.6.19, lessThanOrEqual: 6.6.*, status: unaffected, versionType: custom
version: 6.7.7, lessThanOrEqual: 6.7.*, status: unaffected, versionType: custom
version: 6.8, lessThanOrEqual: *, status: unaffected, versionType: original_commit_for_fix
}
