Description

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

ksmbd: fix slab-out-of-bounds in smb2_allocate_rsp_buf

If ->ProtocolId is SMB2_TRANSFORM_PROTO_NUM, smb2 request size
validation could be skipped. if request size is smaller than
sizeof(struct smb2_query_info_req), slab-out-of-bounds read can happen in
smb2_allocate_rsp_buf(). This patch allocate response buffer after
decrypting transform request. smb3_decrypt_req() will validate transform
request size and avoid slab-out-of-bound in smb2_allocate_rsp_buf().

Classification

CVE ID: CVE-2024-26980

CVSS Base Severity: LOW

CVSS Base Score: 0.0

Affected Products

Vendor: Linux

Product: Linux

Exploit Prediction Scoring System (EPSS)

EPSS Score: 0.05% (probability of being exploited)

EPSS Percentile: 17.81% (scored less or equal to compared to others)

EPSS Date: 2025-02-03 (when was this score calculated)

References

https://git.kernel.org/stable/c/da21401372607c49972ea87a6edaafb36a17c325
https://git.kernel.org/stable/c/b80ba648714e6d790d69610cf14656be222d0248
https://git.kernel.org/stable/c/3160d9734453a40db248487f8204830879c207f1
https://git.kernel.org/stable/c/0977f89722eceba165700ea384f075143f012085
https://git.kernel.org/stable/c/c119f4ede3fa90a9463f50831761c28f989bfb20

Timeline