[v25.3.x] build/deps: patch krb5 1.21.3 for CVE-2026-40355, CVE-2026-40356#30571
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Apply upstream fix (krb5/krb5@2e75f0d) as a Bazel patch to address two high-severity (CVSS 8.7) unauthenticated NegoEx parsing vulnerabilities: - CVE-2026-40355: null pointer dereference in parse_nego_message() - CVE-2026-40356: integer underflow in parse_message() Both allow a remote attacker to crash the process via a malformed gss_accept_sec_context() call when a NegoEx mechanism is registered. (cherry picked from commit b0014ea)
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Backport of PR #30537
Conflict details
The following files were cherry-picked and may need regeneration:
These files were accepted as-is from the source branch. Before merging,
regenerate them on the target branch to ensure they're correct. For example:
bazel mod deps --lockfile_mode=update