CVE-2010-2954: Null Pointer Dereference
Description of problem: BUG: unable to handle kernel NULL pointer dereference at 00000004 IP: [<f7f06dca>] hashbindelete+0x14/0xad [irda] pdpt = 0000000000a57001 pde = 0000000000000000 Oops: 0000 [#1] SMP last sysfs file: /sys/devices/virtual/dmi/id/sysvendor Modules linked in: irda crcccitt fuse ip6tREJECT nfconntrackipv6 ip6tablefilter ip6tables ipv6 vmblock vsock vmmemctl vmhgfs uinput pcnet32 ppdev vmxnet microcode parportpc parport mii vmci i2cpiix4 i2ccore mptspi mptscsih mptbase scsitransportspi [last unloaded: scsiwaitscan]
Pid: 2403, comm: a.out Not tainted 2.6.33.6-147.2.4.fc13.i686.PAE #1 440BX Desktop Reference Platform/VMware Virtual Platform EIP: 0060:[<f7f06dca>] EFLAGS: 00010282 CPU: 0 EIP is at hashbindelete+0x14/0xad [irda] EAX: 00000000 EBX: 00000000 ECX: f2f97f4c EDX: f7f084aa ESI: df1b8800 EDI: f7f084aa EBP: eb19bd78 ESP: eb19bd64 DS: 007b ES: 007b FS: 00d8 GS: 00e0 SS: 0068 Process a.out (pid: 2403, ti=eb19a000 task=f2ed9980 task.ti=eb19a000) Stack: 00000000 00000202 eb0df2c0 df1b8800 df1a6770 eb19bd84 f7f085f5 eb0df2c0 <0> eb19bd90 f7f0861f eb20c400 eb19bda4 f7f0a958 df1b8800 f7f0ebe4 df1a6770 <0> eb19bdb4 c06ef16e f2e21100 00000008 eb19bdbc c06ef1cf eb19bde0 c04d183a Call Trace: [<f7f085f5>] ? iriasdeleteobject+0x1b/0x2c [irda] [<f7f0861f>] ? iriasdeleteobject+0x19/0x1e [irda] [<f7f0a958>] ? irdarelease+0x65/0x127 [irda] [<c06ef16e>] ? sockrelease+0x14/0x59 [<c06ef1cf>] ? sockclose+0x1c/0x20 [<c04d183a>] ? fput+0xea/0x181 [<c04d18e4>] ? fput+0x13/0x15 [<c04cef5f>] ? filpclose+0x51/0x5b [<c043f260>] ? putfilesstruct+0x5f/0xb3 [<c043f2e8>] ? exitfiles+0x34/0x38 [<c0440a1b>] ? doexit+0x200/0x615 [<c044c4c0>] ? dequeuesignal+0xb1/0x120 [<c0440e9b>] ? dogroupexit+0x6b/0x94 [<c044c89d>] ? getsignaltodeliver+0x36e/0x389 [<c0407cd4>] ? dosignal+0x5a/0x6f4 [<c078359d>] ? apictimerinterrupt+0x31/0x38 [<c0455f57>] ? hrtimernanosleep+0x94/0xdc [<c04d7376>] ? pathput+0x15/0x18 [<c047c6a6>] ? auditsyscallexit+0xfa/0x10f [<c040838d>] ? donotifyresume+0x1f/0x79 [<c07831e4>] ? worknotifysig+0x13/0x1b Code: 04 01 74 0b 8b 55 f0 8d 43 0c e8 b8 bf 87 c8 83 c4 0c 5b 5e 5f 5d c3 55 89 e5 57 89 d7 56 53 89 c3 83 ec 08 c7 45 ec 00 00 00 00 <f6> 40 04 01 74 0b 8d 40 0c e8 40 bf 87 c8 89 45 ec 89 de c7 45 EIP: [<f7f06dca>] hashbindelete+0x14/0xad [irda] SS:ESP 0068:eb19bd64 CR2: 0000000000000004 ---[ end trace 8c5fb89ec896b3a8 ]--- Fixing recursive fault but reboot is needed!
Acknowledgements:
Red Hat would like to thank Tavis Ormandy for reporting this issue.
Other sources
The irdabind function in net/irda/afirda.c in the Linux kernel before 2.6.36-rc3-next-20100901 does not properly handle failure of the irdaopentsap function, which allows local users to cause a denial of service (NULL pointer dereference and panic) and possibly have unspecified other impact via multiple unsuccessful calls to bind on an AFIRDA (aka PFIRDA) socket.
— Launchpad
Affected Software
Remediation
Patch Available
Patch Available
Patch Available
Event History
Frequently Asked Questions
What is the severity of CVE-2010-2954?
CVE-2010-2954 has a severity rating that typically indicates it can lead to a kernel NULL pointer dereference, resulting in potential system crashes.
How do I fix CVE-2010-2954?
To fix CVE-2010-2954, you should update your Linux kernel to a version that is higher than 2.6.36.
What systems are affected by CVE-2010-2954?
CVE-2010-2954 affects various Linux distributions and versions, including Debian, openSUSE, and multiple versions of Ubuntu.
What type of vulnerability is CVE-2010-2954?
CVE-2010-2954 is classified as a kernel vulnerability that can lead to a denial of service due to NULL pointer dereference.
Can CVE-2010-2954 be exploited remotely?
CVE-2010-2954 is primarily a local privilege escalation vulnerability, meaning it requires local access for exploitation.