Description
In the Linux kernel, the following vulnerability has been resolved: ksmbd: validate EaNameLength in smb2_get_ea() smb2_get_ea() reads ea_req->EaNameLength from the client request and passes it directly to strncmp() as the comparison length without verifying that the length of the name really is the size of the input buffer received. Fix this up by properly checking the size of the name based on the value received and the overall size of the request, to prevent a later strncmp() call to use the length as a "trusted" size of the buffer. Without this check, uninitialized heap values might be slowly leaked to the client.
Affected products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
Linux Linux
Default version status: unaffected
e2f34481b24db2fd634b5edb0a5bd0e4d38cc6e9 to < 859f11e1bc81a4d32bb3ceeae54bcd296ac675d3affectede2f34481b24db2fd634b5edb0a5bd0e4d38cc6e9 to < 4b73376feecb3b61172fe5b4ff42bbbb8531669daffectede2f34481b24db2fd634b5edb0a5bd0e4d38cc6e9 to < 551dfb15b182abad4600eaf7b37e6eb7000d5b1baffectede2f34481b24db2fd634b5edb0a5bd0e4d38cc6e9 to < 3363a770b193f555f29d76ddf4ced3305c0ccf6daffectede2f34481b24db2fd634b5edb0a5bd0e4d38cc6e9 to < 243b206bcb5a7137e8bddd57b2eec81e1ebd3859affectede2f34481b24db2fd634b5edb0a5bd0e4d38cc6e9 to < dfc6878d14acafffbe670bf2576620757a10a3d8affectede2f34481b24db2fd634b5edb0a5bd0e4d38cc6e9 to < 66751841212c2cc196577453c37f7774ff363f02affected
Linux Linux
Default version status: affected
5.15affected0 to < 5.15unaffected6.1.175 to ≤ 6.1.*unaffected6.6.136 to ≤ 6.6.*unaffected6.12.83 to ≤ 6.12.*unaffected6.18.24 to ≤ 6.18.*unaffected6.19.14 to ≤ 6.19.*unaffected7.0.1 to ≤ 7.0.*unaffected7.1 to ≤ *unaffected
References
- https://git.kernel.org/stable/c/859f11e1bc81a4d32bb3ceeae54bcd296ac675d3 ↗
- https://git.kernel.org/stable/c/4b73376feecb3b61172fe5b4ff42bbbb8531669d ↗
- https://git.kernel.org/stable/c/551dfb15b182abad4600eaf7b37e6eb7000d5b1b ↗
- https://git.kernel.org/stable/c/3363a770b193f555f29d76ddf4ced3305c0ccf6d ↗
- https://git.kernel.org/stable/c/243b206bcb5a7137e8bddd57b2eec81e1ebd3859 ↗
- https://git.kernel.org/stable/c/dfc6878d14acafffbe670bf2576620757a10a3d8 ↗
- https://git.kernel.org/stable/c/66751841212c2cc196577453c37f7774ff363f02 ↗
- https://cert-portal.siemens.com/productcert/html/ssa-784472.html ↗