Description
Integer underflow in the irda_getsockopt function in net/irda/af_irda.c in the Linux kernel before 2.6.37 on platforms other than x86 allows local users to obtain potentially sensitive information from kernel heap memory via an IRLMP_ENUMDEVICES getsockopt call.
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 5.0 | linux-2.6 | 2.6.26-26lenny2 | DSA-2153-1 |
| Debian 5.0 | user-mode-linux | 2.6.26-1um-2+26lenny2 | DSA-2153-1 |
Advisories 1
- DSA-2153-1 linux-2.6 - several issues Debian Security (DSA / DLA) · Mar 9, 2026
References
- 45556 vdb-entry
- http://www.kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.37
- [netdev] 20101222 [PATCH] irda: prevent integer underflow in IRLMP_ENUMDEVICES mailing-list
- 42684 third-party-advisory
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=fdac1e0697356ac212259f2147aa60c72e334861
- ADV-2011-0375 vdb-entry
- [oss-security] 20101223 CVE request: kernel: irda: prevent integer underflow in IRLMP_ENUMDEVICES mailing-list
- SUSE-SA:2011:008 vendor-advisory
- [oss-security] 20110103 Re: CVE request: kernel: irda: prevent integer underflow in IRLMP_ENUMDEVICES mailing-list
- 43291 third-party-advisory