What’s Vulnerable › Vulnerabilities

CVE-2010-4083

• Severity: low (CVSS 1.9 v2.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.4% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2010-11-30 · updated 2026-06-16
• Weakness: CWE-909

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.

Affected products

• Debian Linux: 5.0
• Linux kernel: before 2.6.36 — fixed in 2.6.36
• Opensuse: 11.3
• SUSE Linux Enterprise Server 15 SP1: 10-sp3, 11-sp1
• SUSE Linux Enterprise Real Time Extension: 11-sp1
• SUSE Linux Enterprise Server: 9, 10-sp3, 11-sp1
• SUSE Linux Enterprise Software Development Kit: 10-sp3

How to fix

Upgrade to a fixed version: Linux kernel 2.6.36. Check the vendor advisory for mitigations.

References

• http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=982f7c2b2e6a28f8f266e075d92e19c0dd4c6e56
• http://lists.opensuse.org/opensuse-security-announce/2010-12/msg00004.html
• http://lists.opensuse.org/opensuse-security-announce/2011-01/msg00000.html
• http://lists.opensuse.org/opensuse-security-announce/2011-01/msg00004.html
• http://lists.opensuse.org/opensuse-security-announce/2011-02/msg00000.html
• http://lists.opensuse.org/opensuse-security-announce/2011-02/msg00002.html
• http://secunia.com/advisories/42778
• http://secunia.com/advisories/42789
• http://secunia.com/advisories/42890
• http://secunia.com/advisories/42932
• http://secunia.com/advisories/42963
• http://secunia.com/advisories/43291

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