[17182] in Kerberos-V5-bugs
[krbdev.mit.edu #9246] git commit
daemon@ATHENA.MIT.EDU (Greg Hudson via RT)
Mon Nov 9 11:57:23 2026
From: "Greg Hudson via RT" <rt-comment@krbdev.mit.edu>
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Mon Nov 09 11:57:16 2026: Request 9246 was acted upon.
Transaction: Ticket created by ghudson@mit.edu
Queue: krb5
Subject: git commit
Owner: ghudson@mit.edu
Requestors:
Status: new
Ticket <URL: https://krbdev.mit.edu/rt/Ticket/Display.html?id=9246 >
Free call_arg on all AUTH_GSSAPI exit paths
In gssrpc__svcauth_gssapi(), ensure that call_arg is released along
all exit paths by freeing it in the error handler.
CVE-2026-112321:
The AUTH_GSSAPI handler in lib/rpc/svc_auth_gssapi.c in MIT Kerberos 5
(aka krb5) does not free decoded arguments on certain error paths,
which allows remote attackers to cause a denial of service (memory
exhaustion in kadmind) via crafted AUTH_GSSAPI_INIT requests that
trigger authentication failures.
https://github.com/krb5/krb5/commit/89ea06778fe893a8fdad483f7716fe8309521603
Author: Julien Rische <jrische@redhat.com>
Committer: Greg Hudson <ghudson@mit.edu>
Commit: 89ea06778fe893a8fdad483f7716fe8309521603
Branch: master
src/lib/rpc/svc_auth_gssapi.c | 9 ++++-----
1 file changed, 4 insertions(+), 5 deletions(-)
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