Bug 1223676 (CVE-2024-26936) - VUL-0: CVE-2024-26936: kernel: ksmbd: out-of-bounds in request buffer
Summary: VUL-0: CVE-2024-26936: kernel: ksmbd: out-of-bounds in request buffer
Status: RESOLVED FIXED
Alias: CVE-2024-26936
Product: SUSE Security Incidents
Classification: Novell Products
Component: Incidents (show other bugs)
Version: unspecified
Hardware: Other Other
: P3 - Medium : Normal
Target Milestone: ---
Assignee: Security Team bot
QA Contact: Security Team bot
URL: https://smash.suse.de/issue/403704/
Whiteboard:
Keywords:
Depends on:
Blocks:
 
Reported: 2024-05-02 08:47 UTC by SMASH SMASH
Modified: 2024-05-21 07:55 UTC (History)
2 users (show)

See Also:
Found By: Security Response Team
Services Priority:
Business Priority:
Blocker: ---
Marketing QA Status: ---
IT Deployment: ---

Attachments
Add an attachment (proposed patch, testcase, etc.)

Note You need to log in before you can comment on or make changes to this bug.
Description SMASH SMASH 2024-05-02 08:47:22 UTC 
In the Linux kernel, the following vulnerability has been resolved:

ksmbd: validate request buffer size in smb2_allocate_rsp_buf()

The response buffer should be allocated in smb2_allocate_rsp_buf
before validating request. But the fields in payload as well as smb2 header
is used in smb2_allocate_rsp_buf(). This patch add simple buffer size
validation to avoid potencial out-of-bounds in request buffer.

References:
http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2024-26936
https://www.cve.org/CVERecord?id=CVE-2024-26936
https://git.kernel.org/stable/c/17cf0c2794bdb6f39671265aa18aea5c22ee8c4a
https://git.kernel.org/stable/c/21ff9d7d223c5c19cb4334009e4c0c83a2f4d674
https://git.kernel.org/stable/c/2c27a64a2bc47d9bfc7c3cf8be14be53b1ee7cb6
https://git.kernel.org/stable/c/5c20b242d4fed73a93591e48bfd9772e2322fb11
https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2024/CVE-2024-26936.mbox
https://bugzilla.redhat.com/show_bug.cgi?id=2278233
Comment 3 Thomas Leroy 2024-05-21 07:55:58 UTC 
All done, closing.