[17241] in Kerberos-V5-bugs
[krbdev.mit.edu #9267] git commit
daemon@ATHENA.MIT.EDU (Greg Hudson via RT)
Mon Nov 9 12:03:14 2026
From: "Greg Hudson via RT" <rt@krbdev.mit.edu>
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Date: Mon, 09 Nov 2026 12:01:44 -0500
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<URL: https://krbdev.mit.edu/rt/Ticket/Display.html?id=9267 >
Fix leaks in lifecycle of RPCSEC_GSS context
In svcauth_gss_accept_sec_context(), if gss_accept_sec_context()
yields a src_name and returns GSS_S_CONTINUE_NEEDED, free the stored
gd->cname before making the next call. If gss_accept_sec_context()
returns an error for an existing context, do not leak gd->ctx. In the
unlikely event that gss_accept_sec_context() returns GSS_S_COMPLETE
multiple times, release gd->cname before calling gss_display_name()
again.
In gssrpc__svcauth_gss(), reject RPCSEC_GSS_INIT and
RPCSEC_GSS_CONTINUE_INIT requests if a context is already established.
[ghudson@mit.edu: added gd->established check; removed change to
delete existing context on error return; rewrote commit message]
(cherry picked from commit 21e981c73df78eaa1df367a97ad31ac848233a89)
https://github.com/krb5/krb5/commit/31ebc4d7650e77d9b8378f486047507970688674
Author: Julien Rische <jrische@redhat.com>
Committer: Greg Hudson <ghudson@mit.edu>
Commit: 31ebc4d7650e77d9b8378f486047507970688674
Branch: krb5-1.22
src/lib/rpc/svc_auth_gss.c | 10 +++++++++-
1 file changed, 9 insertions(+), 1 deletion(-)
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