# CVE-2024-26980: linux: In the Linux kernel, the following vulnerability has been resolved:  ksmbd: fix slab-out-of-bounds in smb2_allocate_r...

CVE-2024-26980 is fixed in linux on 1 platform, first by DEBIAN-CVE-2024-26980, released May 1, 2024. It is not reported as exploited. Patch Radar priority: High.

- Web page: https://patchblox.com/security/cve/CVE-2024-26980
- Priority: High
- CVSS: 8.2 (high)
- EPSS: 0.0062
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: May 1, 2024

## 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().

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | linux Debian 12.15 (bookworm) | 6.1.90-1 | [DEBIAN-CVE-2024-26980](https://patchblox.com/security/data/fix/linux/debian-cve-2024-26980.md) | May 1, 2024 |
| Linux | linux Debian 13.5 (trixie) | 6.8.9-1 | [DEBIAN-CVE-2024-26980](https://patchblox.com/security/data/fix/linux/debian-cve-2024-26980.md) | May 1, 2024 |
| Linux | linux Debian 14 | 6.8.9-1 | [DEBIAN-CVE-2024-26980](https://patchblox.com/security/data/fix/linux/debian-cve-2024-26980.md) | May 1, 2024 |

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