[oe][meta-oe][wrynose][PATCH 21/22] libkcapi: patch CVE-2026-71227

[ankur.tyagi85@gmail.com]

From: Ankur Tyagi <ankur.tyagi85@gmail.com>

Backport commit fixing the CVE as per the release notes[1]

Details:
https://nvd.nist.gov/vuln/detail/cve-2026-71227

[1]https://github.com/smuellerDD/libkcapi/releases/tag/v1.5.1

Signed-off-by: Ankur Tyagi <ankur.tyagi85@gmail.com>
---
 .../libkcapi/libkcapi/CVE-2026-71227.patch    | 40 +++++++++++++++++++
 .../recipes-crypto/libkcapi/libkcapi_1.5.0.bb |  1 +
 2 files changed, 41 insertions(+)
 create mode 100644 meta-oe/recipes-crypto/libkcapi/libkcapi/CVE-2026-71227.patch

diff --git a/meta-oe/recipes-crypto/libkcapi/libkcapi/CVE-2026-71227.patch b/meta-oe/recipes-crypto/libkcapi/libkcapi/CVE-2026-71227.patch
new file mode 100644
index 0000000000..6074c0da27
--- /dev/null
+++ b/meta-oe/recipes-crypto/libkcapi/libkcapi/CVE-2026-71227.patch
@@ -0,0 +1,40 @@
+From d85279e3bec7578f8c238aec92539985c2032616 Mon Sep 17 00:00:00 2001
+From: Stephan Mueller <smueller@chronox.de>
+Date: Thu, 30 Jul 2026 08:38:10 +0200
+Subject: [PATCH] Fix potential infinite loop
+
+Signed-off-by: Zoltan Fridrich <zfridric@redhat.com>
+Signed-off-by: Stephan Mueller <smueller@chronox.de>
+
+CVE: CVE-2026-71227
+Upstream-Status: Backport [https://github.com/smuellerDD/libkcapi/commit/9a29cc2ce0fa87ec212d58118402eafe07db3f60]
+
+Dropped changes to the CHANGES.md file.
+
+Signed-off-by: Ankur Tyagi <ankur.tyagi85@gmail.com>
+---
+ lib/kcapi-kernel-if.c | 4 +++-
+ 1 file changed, 3 insertions(+), 1 deletion(-)
+
+diff --git a/lib/kcapi-kernel-if.c b/lib/kcapi-kernel-if.c
+index 8a12c09..a54cdaa 100644
+--- a/lib/kcapi-kernel-if.c
++++ b/lib/kcapi-kernel-if.c
+@@ -436,6 +436,8 @@ int _kcapi_aio_read_all(struct kcapi_handle *handle, size_t toread,
+ 
+ 		if (rc < 0)
+ 			return err == 0 ? rc : err;
++		if (rc == 0)
++			return err == 0 ? -ETIMEDOUT : err;
+ 
+ 		for (i = 0; i < rc; i++) {
+ 			struct iocb *cb;
+@@ -509,7 +511,7 @@ int _kcapi_aio_read_iov(struct kcapi_handle *handle,
+ 			timeout.tv_sec = 0;
+ 			timeout.tv_nsec = 10000;
+ 			ret = _kcapi_aio_read_all(handle, iovlen, &timeout);
+-			if (ret < 0)
++			if (ret < 0 && ret != -ETIMEDOUT)
+ 				return ret;
+ 		}
+ 
diff --git a/meta-oe/recipes-crypto/libkcapi/libkcapi_1.5.0.bb b/meta-oe/recipes-crypto/libkcapi/libkcapi_1.5.0.bb
index f2ddc25336..f1fe6a0940 100644
--- a/meta-oe/recipes-crypto/libkcapi/libkcapi_1.5.0.bb
+++ b/meta-oe/recipes-crypto/libkcapi/libkcapi_1.5.0.bb
@@ -8,6 +8,7 @@ SRC_URI = "git://github.com/smuellerDD/libkcapi.git;branch=master;protocol=https
            file://CVE-2026-71226-1.patch \
            file://CVE-2026-71226-2.patch \
            file://CVE-2026-71226-3.patch \
+           file://CVE-2026-71227.patch \
           "
 
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