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CVE-2010-4242

Publication date 10 January 2011

Last updated 24 July 2024

Ubuntu priority

Low

Why this priority?

The hci_uart_tty_open function in the HCI UART driver (drivers/bluetooth/hci_ldisc.c) in the Linux kernel 2.6.36, and possibly other versions, does not verify whether the tty has a write operation, which allows local users to cause a denial of service (NULL pointer dereference) via vectors related to the Bluetooth driver.

From the Ubuntu Security Team

Alan Cox discovered that the HCI UART driver did not correctly check if a write operation was available. If the mmap_min-addr sysctl was changed from the Ubuntu default to a value of 0, a local attacker could exploit this flaw to gain root privileges.

Status

Package Ubuntu Release Status
linux 11.04 natty
Not affected
10.10 maverick
Fixed 2.6.35-25.43
10.04 LTS lucid
Fixed 2.6.32-27.49
9.10 karmic
Fixed 2.6.31-23.74
8.04 LTS hardy
Fixed 2.6.24-29.87
6.06 LTS dapper Not in release
linux-ec2 11.04 natty Not in release
10.10 maverick Ignored end of life
10.04 LTS lucid
Fixed 2.6.32-311.22
9.10 karmic
Fixed 2.6.31-308.28
8.04 LTS hardy Not in release
6.06 LTS dapper Not in release
linux-fsl-imx51 11.04 natty Not in release
10.10 maverick Not in release
10.04 LTS lucid
Fixed 2.6.31-610.27
9.10 karmic Ignored end of life
8.04 LTS hardy Not in release
6.06 LTS dapper Not in release
linux-lts-backport-maverick 11.04 natty Not in release
10.10 maverick Not in release
10.04 LTS lucid
Fixed 2.6.35-25.44~lucid1
9.10 karmic Not in release
8.04 LTS hardy Not in release
6.06 LTS dapper Not in release
linux-lts-backport-natty 11.04 natty Not in release
10.10 maverick Not in release
10.04 LTS lucid
Not affected
8.04 LTS hardy Not in release
linux-mvl-dove 11.04 natty Not in release
10.10 maverick
Fixed 2.6.32-414.30
10.04 LTS lucid
Fixed 2.6.32-213.29
9.10 karmic Ignored end of life
8.04 LTS hardy Not in release
6.06 LTS dapper Not in release
linux-source-2.6.15 11.04 natty Not in release
10.10 maverick Not in release
10.04 LTS lucid Not in release
9.10 karmic Not in release
8.04 LTS hardy Not in release
6.06 LTS dapper
Fixed 2.6.15-57.94
linux-ti-omap4 11.04 natty
Not affected
10.10 maverick
Fixed 2.6.35-903.23
10.04 LTS lucid Not in release
9.10 karmic Not in release
8.04 LTS hardy Not in release
6.06 LTS dapper Not in release

Patch details

For informational purposes only. We recommend not to cherry-pick updates. How can I get the fixes?

Package Patch details
linux

References

Related Ubuntu Security Notices (USN)

    • USN-1092-1
    • Linux Kernel vulnerabilities
    • 25 March 2011
    • USN-1089-1
    • Linux kernel vulnerabilities
    • 18 March 2011
    • USN-1202-1
    • Linux kernel (OMAP4) vulnerabilities
    • 13 September 2011
    • USN-1105-1
    • Linux kernel vulnerabilities
    • 5 April 2011
    • USN-1083-1
    • Linux kernel vulnerabilities
    • 3 March 2011
    • USN-1041-1
    • Linux kernel vulnerabilities
    • 10 January 2011
    • USN-1204-1
    • Linux kernel (i.MX51) vulnerabilities
    • 13 September 2011
    • USN-1093-1
    • Linux Kernel vulnerabilities (Marvell Dove)
    • 25 March 2011

Other references