[PATCH v2 1/8] Update GLIBC-SA-2026-0012 to mention A6 records

[Adhemerval Zanella Netto]

On 16/06/26 13:31, Florian Weimer wrote:
> It turns out there is a missing inner length check in it, too.
> 
> Also fix the vulnerable commit.  It predates the glibc 2.0 release
> because the old stream-based formatting code in resolv/res_debug.c had
> the same bug in its LOC handling.

LGTM, thanks.

Reviewed-by: Adhemerval Zanella  <adhemerval.zanella@linaro.org>

> ---
>  advisories/GLIBC-SA-2026-0012 | 4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)
> 
> diff --git a/advisories/GLIBC-SA-2026-0012 b/advisories/GLIBC-SA-2026-0012
> index 6f8f00ddd7..926ca16102 100644
> --- a/advisories/GLIBC-SA-2026-0012
> +++ b/advisories/GLIBC-SA-2026-0012
> @@ -2,7 +2,7 @@ Buffer overread in ns_printrrf with corrupted RDATA field
>  
>  The deprecated functions ns_printrrf, ns_printrr and fp_nquery in the
>  GNU C Library version 2.2 and newer fail to validate the RDATA content
> -against the RDATA length in a DNS response when processing LOC, CERT,
> +against the RDATA length in a DNS response when processing A6, CERT, LOC,
>  TKEY or TSIG records, which may allow an attacker to craft a DNS
>  response, causing a target application to crash or read uninitialized
>  memory.
> @@ -15,4 +15,4 @@ interfaces since they may be removed in future versions.
>  
>  CVE-Id: CVE-2026-6238
>  Public-Date: 2026-04-11
> -Vulnerable-Commit: b43b13ac2544b11f35be301d1589b51a8473e32b (2.2)
> +Vulnerable-Commit: ee188d555b8c32ad9704a7440cab400af967292f (1.90)