Bug 1224691 (CVE-2024-35820) - VUL-0: REJECTED: CVE-2024-35820: kernel: io_uring: fix io_queue_proc modifying req->flags
Summary: VUL-0: REJECTED: CVE-2024-35820: kernel: io_uring: fix io_queue_proc modifyin...
Status: RESOLVED INVALID
Alias: CVE-2024-35820
Product: SUSE Security Incidents
Classification: Novell Products
Component: Incidents (show other bugs)
Version: unspecified
Hardware: Other Other
: P3 - Medium : Normal
Target Milestone: ---
Assignee: Gabriel Krisman Bertazi
QA Contact: Security Team bot
URL: https://smash.suse.de/issue/406387/
Whiteboard: CVSSv3.1:SUSE:CVE-2024-35820:5.5:(AV:...
Keywords:
Depends on:
Blocks:
 
Reported: 2024-05-20 16:06 UTC by SMASH SMASH
Modified: 2024-05-27 07:49 UTC (History)
4 users (show)

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

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Description SMASH SMASH 2024-05-20 16:06:55 UTC 
In the Linux kernel, the following vulnerability has been resolved:

io_uring: fix io_queue_proc modifying req->flags

With multiple poll entries __io_queue_proc() might be running in
parallel with poll handlers and possibly task_work, we should not be
carelessly modifying req->flags there. io_poll_double_prepare() handles
a similar case with locking but it's much easier to move it into
__io_arm_poll_handler().

References:
http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2024-35820
https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2024/CVE-2024-35820.mbox
https://git.kernel.org/stable/c/51a490a7f63cae0754120e7c04f4f47920bd48db
https://git.kernel.org/stable/c/0ecb8919469e6d5c74eea24086b34ce1bda5aef7
https://git.kernel.org/stable/c/1a8ec63b2b6c91caec87d4e132b1f71b5df342be
https://www.cve.org/CVERecord?id=CVE-2024-35820
https://bugzilla.redhat.com/show_bug.cgi?id=2281196
Comment 1 Joey Lee 2024-05-21 07:11:41 UTC 
https://www.suse.com/security/cve/CVE-2024-35820.html
cvss 5.5
Comment 2 Gabriel Krisman Bertazi 2024-05-22 23:50:58 UTC 
No fixes tag. Consider SP3 and higher affected. I'll work on the backport.
Comment 3 Andrea Mattiazzo 2024-05-27 07:49:37 UTC 
CVE is now rejected: https://lore.kernel.org/linux-cve-announce/2024052547-REJECTED-d3f2@gregkh/