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Bug#989147: glibc: CVE-2021-33574: mq_notify does not handle separately allocated thread attributes



Hi,

Anybody knows when will this be patched in buster (glibc 2.28)?

 

Thanks,

Liming

 

On Wed, 26 May 2021 21:57:12 +0200 Salvatore Bonaccorso <carnil@debian.org> wrote:

> Source: glibc

> Version: 2.31-12

> Severity: important

> Tags: security upstream

> X-Debbugs-Cc: carnil@debian.org, Debian Security Team <team@security.debian.org>

>

> Hi,

>

> The following vulnerability was published for glibc, basically purely

> to track the upstream issue and fix once coming downstream.

>

> CVE-2021-33574[0]:

> | The mq_notify function in the GNU C Library (aka glibc) through 2.33

> | has a use-after-free. It may use the notification thread attributes

> | object (passed through its struct sigevent parameter) after it has

> | been freed by the caller, leading to a denial of service (application

> | crash) or possibly unspecified other impact.

>

>

> If you fix the vulnerability please also make sure to include the

> CVE (Common Vulnerabilities & Exposures) id in your changelog entry.

>

> For further information see:

>

>

> Please adjust the affected versions in the BTS as needed.

>

> Regards,

> Salvatore

>

>

 


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