redis: patch CVE-2025-48367

Details: https://nvd.nist.gov/vuln/detail/CVE-2025-48367

Backport the patch mentioned in the details.

Signed-off-by: Gyorgy Sarvari <skandigraun@gmail.com>

4 files changed, 226 insertions, 0 deletions

diff --git a/meta-oe/recipes-extended/redis/redis-7.2.8/0001-Retry-accept-even-if-accepted-connection-reports-an-.patch b/meta-oe/recipes-extended/redis/redis-7.2.8/0001-Retry-accept-even-if-accepted-connection-reports-an-.patch
new file mode 100644
index 0000000000..8017345913
--- /dev/null
+++ b/meta-oe/recipes-extended/redis/redis-7.2.8/0001-Retry-accept-even-if-accepted-connection-reports-an-.patch
@@ -0,0 +1,117 @@
+From 05524dbadb1acc3d8d75905108fea39cdf43832c Mon Sep 17 00:00:00 2001
+From: Ozan Tezcan <ozantezcan@gmail.com>
+Date: Wed, 14 May 2025 11:02:30 +0300
+Subject: [PATCH] Retry accept() even if accepted connection reports an error
+ (CVE-2025-48367)
+
+In case of accept4() returns an error, we should check errno value and
+decide if we should retry accept4() without waiting next event loop iteration.
+
+CVE: CVE-2025-48367
+Upstream-Status: Backport [https://github.com/redis/redis/commit/c76d6182096cbe10bd3a1dc41095b5ab422e6a74]
+
+Signed-off-by: Gyorgy Sarvari <skandigraun@gmail.com>
+---
+ src/anet.c    | 24 ++++++++++++++++++++++++
+ src/anet.h    |  1 +
+ src/cluster.c |  2 ++
+ src/socket.c  |  2 ++
+ src/tls.c     |  2 ++
+ src/unix.c    |  2 ++
+ 6 files changed, 33 insertions(+)
+
+diff --git a/src/anet.c b/src/anet.c
+index 64824a2..6c539d5 100644
+--- a/src/anet.c
++++ b/src/anet.c
+@@ -704,3 +704,27 @@ int anetIsFifo(char *filepath) {
+     if (stat(filepath, &sb) == -1) return 0;
+     return S_ISFIFO(sb.st_mode);
+ }
++
++/* This function must be called after accept4() fails. It returns 1 if 'err'
++ * indicates accepted connection faced an error, and it's okay to continue
++ * accepting next connection by calling accept4() again. Other errors either
++ * indicate programming errors, e.g. calling accept() on a closed fd or indicate
++ * a resource limit has been reached, e.g. -EMFILE, open fd limit has been
++ * reached. In the latter case, caller might wait until resources are available.
++ * See accept4() documentation for details. */
++int anetAcceptFailureNeedsRetry(int err) {
++    if (err == ECONNABORTED)
++        return 1;
++
++#if defined(__linux__)
++    /* For details, see 'Error Handling' section on
++     * https://man7.org/linux/man-pages/man2/accept.2.html */
++    if (err == ENETDOWN || err == EPROTO || err == ENOPROTOOPT ||
++        err == EHOSTDOWN || err == ENONET || err == EHOSTUNREACH ||
++        err == EOPNOTSUPP || err == ENETUNREACH)
++    {
++        return 1;
++    }
++#endif
++    return 0;
++}
+diff --git a/src/anet.h b/src/anet.h
+index b13c14f..2319039 100644
+--- a/src/anet.h
++++ b/src/anet.h
+@@ -71,5 +71,6 @@ int anetPipe(int fds[2], int read_flags, int write_flags);
+ int anetSetSockMarkId(char *err, int fd, uint32_t id);
+ int anetGetError(int fd);
+ int anetIsFifo(char *filepath);
++int anetAcceptFailureNeedsRetry(int err);
+ 
+ #endif
+diff --git a/src/cluster.c b/src/cluster.c
+index 765958a..2130ffd 100644
+--- a/src/cluster.c
++++ b/src/cluster.c
+@@ -1309,6 +1309,8 @@ void clusterAcceptHandler(aeEventLoop *el, int fd, void *privdata, int mask) {
+     while(max--) {
+         cfd = anetTcpAccept(server.neterr, fd, cip, sizeof(cip), &cport);
+         if (cfd == ANET_ERR) {
++            if (anetAcceptFailureNeedsRetry(errno))
++                continue;
+             if (errno != EWOULDBLOCK)
+                 serverLog(LL_VERBOSE,
+                     "Error accepting cluster node: %s", server.neterr);
+diff --git a/src/socket.c b/src/socket.c
+index dad8e93..09d87bc 100644
+--- a/src/socket.c
++++ b/src/socket.c
+@@ -318,6 +318,8 @@ static void connSocketAcceptHandler(aeEventLoop *el, int fd, void *privdata, int
+     while(max--) {
+         cfd = anetTcpAccept(server.neterr, fd, cip, sizeof(cip), &cport);
+         if (cfd == ANET_ERR) {
++            if (anetAcceptFailureNeedsRetry(errno))
++                continue;
+             if (errno != EWOULDBLOCK)
+                 serverLog(LL_WARNING,
+                     "Accepting client connection: %s", server.neterr);
+diff --git a/src/tls.c b/src/tls.c
+index e709c99..9a66e81 100644
+--- a/src/tls.c
++++ b/src/tls.c
+@@ -774,6 +774,8 @@ static void tlsAcceptHandler(aeEventLoop *el, int fd, void *privdata, int mask)
+     while(max--) {
+         cfd = anetTcpAccept(server.neterr, fd, cip, sizeof(cip), &cport);
+         if (cfd == ANET_ERR) {
++            if (anetAcceptFailureNeedsRetry(errno))
++                continue;
+             if (errno != EWOULDBLOCK)
+                 serverLog(LL_WARNING,
+                     "Accepting client connection: %s", server.neterr);
+diff --git a/src/unix.c b/src/unix.c
+index bd146d0..8fdefe4 100644
+--- a/src/unix.c
++++ b/src/unix.c
+@@ -100,6 +100,8 @@ static void connUnixAcceptHandler(aeEventLoop *el, int fd, void *privdata, int m
+     while(max--) {
+         cfd = anetUnixAccept(server.neterr, fd);
+         if (cfd == ANET_ERR) {
++            if (anetAcceptFailureNeedsRetry(errno))
++                continue;
+             if (errno != EWOULDBLOCK)
+                 serverLog(LL_WARNING,
+                     "Accepting client connection: %s", server.neterr);
diff --git a/meta-oe/recipes-extended/redis/redis/0001-Retry-accept-even-if-accepted-connection-reports-an-.patch b/meta-oe/recipes-extended/redis/redis/0001-Retry-accept-even-if-accepted-connection-reports-an-.patch
new file mode 100644
index 0000000000..e16ad07e3e
--- /dev/null
+++ b/meta-oe/recipes-extended/redis/redis/0001-Retry-accept-even-if-accepted-connection-reports-an-.patch
@@ -0,0 +1,107 @@
+From 5cb320f03b7d619499d2d69f4371096b5d6a9bdf Mon Sep 17 00:00:00 2001
+From: Ozan Tezcan <ozantezcan@gmail.com>
+Date: Wed, 14 May 2025 11:02:30 +0300
+Subject: [PATCH] Retry accept() even if accepted connection reports an error
+ (CVE-2025-48367)
+
+In case of accept4() returns an error, we should check errno value and
+decide if we should retry accept4() without waiting next event loop iteration.
+
+CVE: CVE-2025-48367
+Upstream-Status: Backport [https://github.com/redis/redis/commit/0fe67435935cc5724ff6eb9c4ca4120c58a15765]
+
+Signed-off-by: Gyorgy Sarvari <skandigraun@gmail.com>
+---
+ src/anet.c       | 24 ++++++++++++++++++++++++
+ src/anet.h       |  2 +-
+ src/cluster.c    |  2 ++
+ src/networking.c |  6 ++++++
+ 4 files changed, 33 insertions(+), 1 deletion(-)
+
+diff --git a/src/anet.c b/src/anet.c
+index 91f6171..2e42fc5 100644
+--- a/src/anet.c
++++ b/src/anet.c
+@@ -594,3 +594,27 @@ int anetFormatFdAddr(int fd, char *buf, size_t buf_len, int fd_to_str_type) {
+     anetFdToString(fd,ip,sizeof(ip),&port,fd_to_str_type);
+     return anetFormatAddr(buf, buf_len, ip, port);
+ }
++
++/* This function must be called after accept4() fails. It returns 1 if 'err'
++ * indicates accepted connection faced an error, and it's okay to continue
++ * accepting next connection by calling accept4() again. Other errors either
++ * indicate programming errors, e.g. calling accept() on a closed fd or indicate
++ * a resource limit has been reached, e.g. -EMFILE, open fd limit has been
++ * reached. In the latter case, caller might wait until resources are available.
++ * See accept4() documentation for details. */
++int anetAcceptFailureNeedsRetry(int err) {
++    if (err == ECONNABORTED)
++        return 1;
++
++#if defined(__linux__)
++    /* For details, see 'Error Handling' section on
++     * https://man7.org/linux/man-pages/man2/accept.2.html */
++    if (err == ENETDOWN || err == EPROTO || err == ENOPROTOOPT ||
++        err == EHOSTDOWN || err == ENONET || err == EHOSTUNREACH ||
++        err == EOPNOTSUPP || err == ENETUNREACH)
++    {
++        return 1;
++    }
++#endif
++    return 0;
++}
+diff --git a/src/anet.h b/src/anet.h
+index 2a685cc..adedaf3 100644
+--- a/src/anet.h
++++ b/src/anet.h
+@@ -72,5 +72,5 @@ int anetFdToString(int fd, char *ip, size_t ip_len, int *port, int fd_to_str_typ
+ int anetKeepAlive(char *err, int fd, int interval);
+ int anetFormatAddr(char *fmt, size_t fmt_len, char *ip, int port);
+ int anetFormatFdAddr(int fd, char *buf, size_t buf_len, int fd_to_str_type);
+-
++int anetAcceptFailureNeedsRetry(int err);
+ #endif
+diff --git a/src/cluster.c b/src/cluster.c
+index 8807fe2..030897c 100644
+--- a/src/cluster.c
++++ b/src/cluster.c
+@@ -691,6 +691,8 @@ void clusterAcceptHandler(aeEventLoop *el, int fd, void *privdata, int mask) {
+     while(max--) {
+         cfd = anetTcpAccept(server.neterr, fd, cip, sizeof(cip), &cport);
+         if (cfd == ANET_ERR) {
++            if (anetAcceptFailureNeedsRetry(errno))
++                continue;
+             if (errno != EWOULDBLOCK)
+                 serverLog(LL_VERBOSE,
+                     "Error accepting cluster node: %s", server.neterr);
+diff --git a/src/networking.c b/src/networking.c
+index 11891d3..2598a58 100644
+--- a/src/networking.c
++++ b/src/networking.c
+@@ -1190,6 +1190,8 @@ void acceptTcpHandler(aeEventLoop *el, int fd, void *privdata, int mask) {
+     while(max--) {
+         cfd = anetTcpAccept(server.neterr, fd, cip, sizeof(cip), &cport);
+         if (cfd == ANET_ERR) {
++            if (anetAcceptFailureNeedsRetry(errno))
++                continue;
+             if (errno != EWOULDBLOCK)
+                 serverLog(LL_WARNING,
+                     "Accepting client connection: %s", server.neterr);
+@@ -1211,6 +1213,8 @@ void acceptTLSHandler(aeEventLoop *el, int fd, void *privdata, int mask) {
+     while(max--) {
+         cfd = anetTcpAccept(server.neterr, fd, cip, sizeof(cip), &cport);
+         if (cfd == ANET_ERR) {
++            if (anetAcceptFailureNeedsRetry(errno))
++                continue;
+             if (errno != EWOULDBLOCK)
+                 serverLog(LL_WARNING,
+                     "Accepting client connection: %s", server.neterr);
+@@ -1231,6 +1235,8 @@ void acceptUnixHandler(aeEventLoop *el, int fd, void *privdata, int mask) {
+     while(max--) {
+         cfd = anetUnixAccept(server.neterr, fd);
+         if (cfd == ANET_ERR) {
++            if (anetAcceptFailureNeedsRetry(errno))
++                continue;
+             if (errno != EWOULDBLOCK)
+                 serverLog(LL_WARNING,
+                     "Accepting client connection: %s", server.neterr);
diff --git a/meta-oe/recipes-extended/redis/redis_6.2.18.bb b/meta-oe/recipes-extended/redis/redis_6.2.18.bb
index 9ce476e14e..5e3b8d4430 100644
--- a/meta-oe/recipes-extended/redis/redis_6.2.18.bb
+++ b/meta-oe/recipes-extended/redis/redis_6.2.18.bb
@@ -18,6 +18,7 @@ SRC_URI = "http://download.redis.io/releases/${BP}.tar.gz \
            file://0006-Define-correct-gregs-for-RISCV32.patch \
            file://0001-CVE-2025-27151.patch \
            file://0001-Fix-out-of-bounds-write-in-hyperloglog-commands-CVE-.patch \
+           file://0001-Retry-accept-even-if-accepted-connection-reports-an-.patch \
           "
 
 SRC_URI[sha256sum] = "470c75bac73d7390be4dd66479c6f29e86371c5d380ce0c7efb4ba2bbda3612d"
diff --git a/meta-oe/recipes-extended/redis/redis_7.2.8.bb b/meta-oe/recipes-extended/redis/redis_7.2.8.bb
index f5ea3eaf5b..22f48afd17 100644
--- a/meta-oe/recipes-extended/redis/redis_7.2.8.bb
+++ b/meta-oe/recipes-extended/redis/redis_7.2.8.bb
@@ -18,6 +18,7 @@ SRC_URI = "http://download.redis.io/releases/${BP}.tar.gz \
            file://0006-Define-correct-gregs-for-RISCV32.patch \
            file://0001-Check-length-of-AOF-file-name-in-redis-check-aof-CVE.patch \
            file://0001-Fix-out-of-bounds-write-in-hyperloglog-commands-CVE-.patch \
+           file://0001-Retry-accept-even-if-accepted-connection-reports-an-.patch \
           "
 
 SRC_URI[sha256sum] = "6be4fdfcdb2e5ac91454438246d00842d2671f792673390e742dfcaf1bf01574"