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Message-Id: <16445695801891@kroah.com>
Date: Fri, 11 Feb 2022 09:53:01 +0100
From: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To: linux-kernel@...r.kernel.org, akpm@...ux-foundation.org,
torvalds@...ux-foundation.org, stable@...r.kernel.org
Cc: lwn@....net, jslaby@...e.cz,
Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Subject: Re: Linux 4.9.301
diff --git a/Makefile b/Makefile
index 52e73f525a44..776408b6c56e 100644
--- a/Makefile
+++ b/Makefile
@@ -1,6 +1,6 @@
VERSION = 4
PATCHLEVEL = 9
-SUBLEVEL = 300
+SUBLEVEL = 301
EXTRAVERSION =
NAME = Roaring Lionus
diff --git a/drivers/mmc/host/moxart-mmc.c b/drivers/mmc/host/moxart-mmc.c
index 41a5493cb68d..a5b03fb7656d 100644
--- a/drivers/mmc/host/moxart-mmc.c
+++ b/drivers/mmc/host/moxart-mmc.c
@@ -698,12 +698,12 @@ static int moxart_remove(struct platform_device *pdev)
if (!IS_ERR(host->dma_chan_rx))
dma_release_channel(host->dma_chan_rx);
mmc_remove_host(mmc);
- mmc_free_host(mmc);
writel(0, host->base + REG_INTERRUPT_MASK);
writel(0, host->base + REG_POWER_CONTROL);
writel(readl(host->base + REG_CLOCK_CONTROL) | CLK_OFF,
host->base + REG_CLOCK_CONTROL);
+ mmc_free_host(mmc);
}
return 0;
}
diff --git a/kernel/cgroup.c b/kernel/cgroup.c
index 248b0bf5d679..5702419c9f30 100644
--- a/kernel/cgroup.c
+++ b/kernel/cgroup.c
@@ -1854,6 +1854,7 @@ static int cgroup_remount(struct kernfs_root *kf_root, int *flags, char *data)
{
int ret = 0;
struct cgroup_root *root = cgroup_root_from_kf(kf_root);
+ struct cgroup_namespace *ns = current->nsproxy->cgroup_ns;
struct cgroup_sb_opts opts;
u16 added_mask, removed_mask;
@@ -1873,6 +1874,13 @@ static int cgroup_remount(struct kernfs_root *kf_root, int *flags, char *data)
pr_warn("option changes via remount are deprecated (pid=%d comm=%s)\n",
task_tgid_nr(current), current->comm);
+ /* See cgroup_mount release_agent handling */
+ if (opts.release_agent &&
+ ((ns->user_ns != &init_user_ns) || !capable(CAP_SYS_ADMIN))) {
+ ret = -EINVAL;
+ goto out_unlock;
+ }
+
added_mask = opts.subsys_mask & ~root->subsys_mask;
removed_mask = root->subsys_mask & ~opts.subsys_mask;
@@ -2248,6 +2256,16 @@ static struct dentry *cgroup_mount(struct file_system_type *fs_type,
goto out_unlock;
}
+ /*
+ * Release agent gets called with all capabilities,
+ * require capabilities to set release agent.
+ */
+ if (opts.release_agent &&
+ ((ns->user_ns != &init_user_ns) || !capable(CAP_SYS_ADMIN))) {
+ ret = -EINVAL;
+ goto out_unlock;
+ }
+
root = kzalloc(sizeof(*root), GFP_KERNEL);
if (!root) {
ret = -ENOMEM;
@@ -3026,6 +3044,14 @@ static ssize_t cgroup_release_agent_write(struct kernfs_open_file *of,
BUILD_BUG_ON(sizeof(cgrp->root->release_agent_path) < PATH_MAX);
+ /*
+ * Release agent gets called with all capabilities,
+ * require capabilities to set release agent.
+ */
+ if ((of->file->f_cred->user_ns != &init_user_ns) ||
+ !capable(CAP_SYS_ADMIN))
+ return -EPERM;
+
cgrp = cgroup_kn_lock_live(of->kn, false);
if (!cgrp)
return -ENODEV;
diff --git a/net/tipc/link.c b/net/tipc/link.c
index 6fc2fa75503d..2c1350e811e2 100644
--- a/net/tipc/link.c
+++ b/net/tipc/link.c
@@ -1441,12 +1441,15 @@ static int tipc_link_proto_rcv(struct tipc_link *l, struct sk_buff *skb,
u16 peers_tol = msg_link_tolerance(hdr);
u16 peers_prio = msg_linkprio(hdr);
u16 rcv_nxt = l->rcv_nxt;
- u16 dlen = msg_data_sz(hdr);
+ u32 dlen = msg_data_sz(hdr);
int mtyp = msg_type(hdr);
void *data;
char *if_name;
int rc = 0;
+ if (dlen > U16_MAX)
+ goto exit;
+
if (tipc_link_is_blocked(l) || !xmitq)
goto exit;
diff --git a/net/tipc/monitor.c b/net/tipc/monitor.c
index 0fcfb3916dcf..e1f4538b1653 100644
--- a/net/tipc/monitor.c
+++ b/net/tipc/monitor.c
@@ -457,6 +457,8 @@ void tipc_mon_rcv(struct net *net, void *data, u16 dlen, u32 addr,
state->probing = false;
/* Sanity check received domain record */
+ if (new_member_cnt > MAX_MON_DOMAIN)
+ return;
if (dlen < dom_rec_len(arrv_dom, 0))
return;
if (dlen != dom_rec_len(arrv_dom, new_member_cnt))
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