medium
4.9
CWE
190
Advisory Published
CVE Published
Updated

CVE-2010-3067: Integer Overflow

First published: Thu Sep 02 2010(Updated: )

Description of problem: This doesn't look correct, the io_submit systemcall calls do_io_submit() directly: SYSCALL_DEFINE3(io_submit, aio_context_t, ctx_id, long, nr, struct iocb __user * __user *, iocbpp) { return do_io_submit(ctx_id, nr, iocbpp, 0); } do_io_submit only checks if nr < 0, but doesnt check if the access_ok multiplication will overflow. long do_io_submit(aio_context_t ctx_id, long nr, struct iocb __user *__user *iocbpp, bool compat) { ... if (unlikely(!access_ok(VERIFY_READ, iocbpp, (nr*sizeof(*iocbpp))))) return -EFAULT; ... Then it uses this loop with __get_user_nocheck(), which doesn't look safe. ... for (i=0; i<nr; i++) { struct iocb __user *user_iocb; struct iocb tmp; if (unlikely(__get_user(user_iocb, iocbpp + i))) { ret = -EFAULT; break; } ... Acknowledgements: Red Hat would like to thank Tavis Ormandy for reporting this issue.

Credit: secalert@redhat.com

Affected SoftwareAffected VersionHow to fix
debian/linux-2.6
Linux Kernel<2.6.36
Linux Kernel=2.6.36
Linux Kernel=2.6.36-rc1
Linux Kernel=2.6.36-rc2
Linux Kernel=2.6.36-rc3
openSUSE=11.2
openSUSE=11.3
SUSE Linux Enterprise Desktop=10-sp3
SUSE Linux Enterprise Real Time Extension=11-sp1
SUSE Linux Enterprise Server=9
SUSE Linux Enterprise Server=10-sp3
SUSE Linux Enterprise Software Development Kit=10-sp3
Debian Linux=5.0
Ubuntu=6.06
Ubuntu=8.04
Ubuntu=9.04
Ubuntu=9.10
Ubuntu=10.04
Ubuntu=10.10

Remedy

http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commitdiff;h=75e1c70fc31490ef8a373ea2a4bea2524099b478

Remedy

http://chinstrap.ubuntu.com/~sconklin/CVEs/CVE-2010-3067/patches/hardy/linux/0001-aio-check-for-multiplication-overflow-in-do_io_submit.txt

Remedy

http://chinstrap.ubuntu.com/~sconklin/CVEs/CVE-2010-3067/patches/jaunty/linux/0001-aio-check-for-multiplication-overflow-in-do_io_submit.txt

Remedy

http://chinstrap.ubuntu.com/~sconklin/CVEs/CVE-2010-3067/patches/karmic/linux/0001-aio-check-for-multiplication-overflow-in-do_io_submit.txt

Remedy

http://chinstrap.ubuntu.com/~sconklin/CVEs/CVE-2010-3067/patches/lucid/linux/0001-aio-check-for-multiplication-overflow-in-do_io_submit.txt

Remedy

http://chinstrap.ubuntu.com/~sconklin/CVEs/CVE-2010-3067/patches/dapper/linux/0001-aio-check-for-multiplication-overflow-in-do_io_submit.txt

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Reference Links

Frequently Asked Questions

  • What is the severity of CVE-2010-3067?

    CVE-2010-3067 has been classified with a moderate severity level due to its potential impact on system stability.

  • How do I fix CVE-2010-3067?

    To mitigate CVE-2010-3067, upgrade your Linux kernel to version 2.6.36 or later.

  • What software is affected by CVE-2010-3067?

    CVE-2010-3067 affects multiple versions of the Linux kernel including 2.6.36 and earlier versions.

  • Is CVE-2010-3067 exploitable remotely?

    Exploitation of CVE-2010-3067 is typically local, requiring user privileges to trigger the vulnerability.

  • What are the consequences of CVE-2010-3067?

    Exploiting CVE-2010-3067 may lead to system crashes or unstable behavior due to improper handling of I/O operations.

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