kernel: bump 6.12 to 6.12.42

Changelog: https://cdn.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.12.42

Added backport to fix ipv6 breakage with the 6.12.42 release:
generic/backport-6.12/621-proc-fix-missing-pde_set_flags.patch[1]

All other patches automatically rebased.

1. https://lore.kernel.org/all/20250821105806.1453833-1-wangzijie1@honor.com

Build system: x86/64
Build-tested: flogic/xiaomi_redmi-router-ax6000-ubootmod, ramips/tplink_archer-a6-v3, x86/64-glibc
Run-tested: flogic/xiaomi_redmi-router-ax6000-ubootmod, ramips/tplink_archer-a6-v3, x86/64-glibc (Intel N150)

Signed-off-by: John Audia <therealgraysky@proton.me>
Link: https://github.com/openwrt/openwrt/pull/19618
Signed-off-by: Robert Marko <robimarko@gmail.com>
This commit is contained in:
John Audia 2025-08-15 15:04:26 -04:00 committed by Robert Marko
parent 23b8205fe2
commit ae49895cd2
13 changed files with 147 additions and 26 deletions

View File

@ -578,7 +578,7 @@ SVN-Revision: 35130
goto next_ht;
--- a/net/ipv6/ip6_offload.c
+++ b/net/ipv6/ip6_offload.c
@@ -269,7 +269,7 @@ INDIRECT_CALLABLE_SCOPE struct sk_buff *
@@ -271,7 +271,7 @@ INDIRECT_CALLABLE_SCOPE struct sk_buff *
continue;
iph2 = (struct ipv6hdr *)(p->data + off);

View File

@ -95,7 +95,7 @@ Signed-off-by: Phil Elwell <phil@raspberrypi.com>
#include <video/mipi_display.h>
@@ -1131,6 +1133,7 @@ static struct fbtft_platform_data *fbtft
@@ -1132,6 +1134,7 @@ static struct fbtft_platform_data *fbtft
* @display: Display properties
* @sdev: SPI device
* @pdev: Platform device
@ -103,7 +103,7 @@ Signed-off-by: Phil Elwell <phil@raspberrypi.com>
*
* Allocates, initializes and registers a framebuffer
*
@@ -1140,12 +1143,15 @@ static struct fbtft_platform_data *fbtft
@@ -1141,12 +1144,15 @@ static struct fbtft_platform_data *fbtft
*/
int fbtft_probe_common(struct fbtft_display *display,
struct spi_device *sdev,
@ -120,7 +120,7 @@ Signed-off-by: Phil Elwell <phil@raspberrypi.com>
int ret;
if (sdev)
@@ -1158,6 +1164,14 @@ int fbtft_probe_common(struct fbtft_disp
@@ -1159,6 +1165,14 @@ int fbtft_probe_common(struct fbtft_disp
pdata = fbtft_properties_read(dev);
if (IS_ERR(pdata))
return PTR_ERR(pdata);

View File

@ -22,7 +22,7 @@ Signed-off-by: Phil Elwell <phil@raspberrypi.com>
--- a/drivers/pps/pps.c
+++ b/drivers/pps/pps.c
@@ -249,12 +249,13 @@ static long pps_cdev_ioctl(struct file *
@@ -254,12 +254,13 @@ static long pps_cdev_ioctl(struct file *
static long pps_cdev_compat_ioctl(struct file *file,
unsigned int cmd, unsigned long arg)
{
@ -38,7 +38,7 @@ Signed-off-by: Phil Elwell <phil@raspberrypi.com>
struct pps_fdata_compat compat;
struct pps_fdata fdata;
int err;
@@ -289,6 +290,7 @@ static long pps_cdev_compat_ioctl(struct
@@ -296,6 +297,7 @@ static long pps_cdev_compat_ioctl(struct
return copy_to_user(uarg, &compat,
sizeof(struct pps_fdata_compat)) ? -EFAULT : 0;
}

View File

@ -21,7 +21,7 @@ Signed-off-by: Jakub Kicinski <kuba@kernel.org>
--- a/drivers/net/dsa/b53/b53_common.c
+++ b/drivers/net/dsa/b53/b53_common.c
@@ -560,12 +560,24 @@ static void b53_port_set_ucast_flood(str
@@ -564,12 +564,24 @@ static void b53_port_set_ucast_flood(str
{
u16 uc;
@ -52,7 +52,7 @@ Signed-off-by: Jakub Kicinski <kuba@kernel.org>
}
static void b53_port_set_mcast_flood(struct b53_device *dev, int port,
@@ -573,19 +585,31 @@ static void b53_port_set_mcast_flood(str
@@ -577,19 +589,31 @@ static void b53_port_set_mcast_flood(str
{
u16 mc;
@ -107,7 +107,7 @@ Signed-off-by: Jakub Kicinski <kuba@kernel.org>
/* PHY Registers */
#define B53_PORT_MII_PAGE(i) (0x10 + (i)) /* Port i MII Registers */
@@ -369,6 +370,18 @@
@@ -372,6 +373,18 @@
#define B53_ARL_SRCH_RSTL(x) (B53_ARL_SRCH_RSTL_0 + ((x) * 0x10))
/*************************************************************************

View File

@ -47,7 +47,7 @@ Signed-off-by: Jakub Kicinski <kuba@kernel.org>
if (error) {
--- a/drivers/net/ppp/pptp.c
+++ b/drivers/net/ppp/pptp.c
@@ -465,6 +465,7 @@ static int pptp_connect(struct socket *s
@@ -469,6 +469,7 @@ static int pptp_connect(struct socket *s
po->chan.mtu -= PPTP_HEADER_OVERHEAD;
po->chan.hdrlen = 2 + sizeof(struct pptp_gre_header);

View File

@ -0,0 +1,121 @@
From: wangzijie <wangzijie1@honor.com>
To: <akpm@linux-foundation.org>, <brauner@kernel.org>,
<viro@zeniv.linux.org.uk>, <adobriyan@gmail.com>,
<rick.p.edgecombe@intel.com>, <ast@kernel.org>,
<k.shutemov@gmail.com>, <jirislaby@kernel.org>,
<linux-fsdevel@vger.kernel.org>
Cc: <polynomial-c@gmx.de>, <gregkh@linuxfoundation.org>,
<stable@vger.kernel.org>, <regressions@lists.linux.dev>,
wangzijie <wangzijie1@honor.com>
Subject: [PATCH v3] proc: fix missing pde_set_flags() for net proc files
Date: Thu, 21 Aug 2025 18:58:06 +0800 [thread overview]
Message-ID: <20250821105806.1453833-1-wangzijie1@honor.com> (raw)
To avoid potential UAF issues during module removal races, we use pde_set_flags()
to save proc_ops flags in PDE itself before proc_register(), and then use
pde_has_proc_*() helpers instead of directly dereferencing pde->proc_ops->*.
However, the pde_set_flags() call was missing when creating net related proc files.
This omission caused incorrect behavior which FMODE_LSEEK was being cleared
inappropriately in proc_reg_open() for net proc files. Lars reported it in this link[1].
Fix this by ensuring pde_set_flags() is called when register proc entry, and add
NULL check for proc_ops in pde_set_flags().
[1]: https://lore.kernel.org/all/20250815195616.64497967@chagall.paradoxon.rec/
Fixes: ff7ec8dc1b64 ("proc: use the same treatment to check proc_lseek as ones for proc_read_iter et.al")
Cc: stable@vger.kernel.org
Reported-by: Lars Wendler <polynomial-c@gmx.de>
Signed-off-by: wangzijie <wangzijie1@honor.com>
---
v3:
- followed by Christian's suggestion to stash pde->proc_ops in a local const variable
v2:
- followed by Jiri's suggestion to refractor code and reformat commit message
---
fs/proc/generic.c | 38 +++++++++++++++++++++-----------------
1 file changed, 21 insertions(+), 17 deletions(-)
--- a/fs/proc/generic.c
+++ b/fs/proc/generic.c
@@ -362,6 +362,25 @@ static const struct inode_operations pro
.setattr = proc_notify_change,
};
+static void pde_set_flags(struct proc_dir_entry *pde)
+{
+ const struct proc_ops *proc_ops = pde->proc_ops;
+
+ if (!proc_ops)
+ return;
+
+ if (proc_ops->proc_flags & PROC_ENTRY_PERMANENT)
+ pde->flags |= PROC_ENTRY_PERMANENT;
+ if (proc_ops->proc_read_iter)
+ pde->flags |= PROC_ENTRY_proc_read_iter;
+#ifdef CONFIG_COMPAT
+ if (proc_ops->proc_compat_ioctl)
+ pde->flags |= PROC_ENTRY_proc_compat_ioctl;
+#endif
+ if (proc_ops->proc_lseek)
+ pde->flags |= PROC_ENTRY_proc_lseek;
+}
+
/* returns the registered entry, or frees dp and returns NULL on failure */
struct proc_dir_entry *proc_register(struct proc_dir_entry *dir,
struct proc_dir_entry *dp)
@@ -369,6 +388,8 @@ struct proc_dir_entry *proc_register(str
if (proc_alloc_inum(&dp->low_ino))
goto out_free_entry;
+ pde_set_flags(dp);
+
write_lock(&proc_subdir_lock);
dp->parent = dir;
if (pde_subdir_insert(dir, dp) == false) {
@@ -557,20 +578,6 @@ struct proc_dir_entry *proc_create_reg(c
return p;
}
-static void pde_set_flags(struct proc_dir_entry *pde)
-{
- if (pde->proc_ops->proc_flags & PROC_ENTRY_PERMANENT)
- pde->flags |= PROC_ENTRY_PERMANENT;
- if (pde->proc_ops->proc_read_iter)
- pde->flags |= PROC_ENTRY_proc_read_iter;
-#ifdef CONFIG_COMPAT
- if (pde->proc_ops->proc_compat_ioctl)
- pde->flags |= PROC_ENTRY_proc_compat_ioctl;
-#endif
- if (pde->proc_ops->proc_lseek)
- pde->flags |= PROC_ENTRY_proc_lseek;
-}
-
struct proc_dir_entry *proc_create_data(const char *name, umode_t mode,
struct proc_dir_entry *parent,
const struct proc_ops *proc_ops, void *data)
@@ -581,7 +588,6 @@ struct proc_dir_entry *proc_create_data(
if (!p)
return NULL;
p->proc_ops = proc_ops;
- pde_set_flags(p);
return proc_register(parent, p);
}
EXPORT_SYMBOL(proc_create_data);
@@ -632,7 +638,6 @@ struct proc_dir_entry *proc_create_seq_p
p->proc_ops = &proc_seq_ops;
p->seq_ops = ops;
p->state_size = state_size;
- pde_set_flags(p);
return proc_register(parent, p);
}
EXPORT_SYMBOL(proc_create_seq_private);
@@ -663,7 +668,6 @@ struct proc_dir_entry *proc_create_singl
return NULL;
p->proc_ops = &proc_single_ops;
p->single_show = show;
- pde_set_flags(p);
return proc_register(parent, p);
}
EXPORT_SYMBOL(proc_create_single_data);

View File

@ -52,7 +52,7 @@ Signed-off-by: Felix Fietkau <nbd@nbd.name>
*/
--- a/include/linux/skbuff.h
+++ b/include/linux/skbuff.h
@@ -3213,6 +3213,10 @@ static inline int pskb_trim(struct sk_bu
@@ -3236,6 +3236,10 @@ static inline int pskb_trim(struct sk_bu
return (len < skb->len) ? __pskb_trim(skb, len) : 0;
}
@ -63,7 +63,7 @@ Signed-off-by: Felix Fietkau <nbd@nbd.name>
/**
* pskb_trim_unique - remove end from a paged unique (not cloned) buffer
* @skb: buffer to alter
@@ -3378,16 +3382,6 @@ static inline struct sk_buff *dev_alloc_
@@ -3401,16 +3405,6 @@ static inline struct sk_buff *dev_alloc_
}

View File

@ -1,2 +1,2 @@
LINUX_VERSION-6.12 = .41
LINUX_KERNEL_HASH-6.12.41 = 6b19a3ae99423de2416964d67251d745910277af258b4c4c63e88fd87dbf0e27
LINUX_VERSION-6.12 = .42
LINUX_KERNEL_HASH-6.12.42 = 4804528a29cd20309a0b41c30e5aeffc35fa21ee3358f4a706d4586d003bc1fb

View File

@ -230,7 +230,7 @@ Signed-off-by: Felix Fietkau <nbd@nbd.name>
{
--- a/net/ipv6/ip6_offload.c
+++ b/net/ipv6/ip6_offload.c
@@ -304,6 +304,7 @@ out:
@@ -306,6 +306,7 @@ out:
return pp;
}
@ -238,7 +238,7 @@ Signed-off-by: Felix Fietkau <nbd@nbd.name>
static struct sk_buff *sit_ip6ip6_gro_receive(struct list_head *head,
struct sk_buff *skb)
@@ -386,6 +387,7 @@ INDIRECT_CALLABLE_SCOPE int ipv6_gro_com
@@ -388,6 +389,7 @@ INDIRECT_CALLABLE_SCOPE int ipv6_gro_com
out:
return err;
}

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@ -9,7 +9,7 @@ Signed-off-by: Felix Fietkau <nbd@nbd.name>
--- a/include/linux/skbuff.h
+++ b/include/linux/skbuff.h
@@ -3180,7 +3180,7 @@ static inline int pskb_network_may_pull(
@@ -3203,7 +3203,7 @@ static inline int pskb_network_may_pull(
* NET_IP_ALIGN(2) + ethernet_header(14) + IP_header(20/40) + ports(8)
*/
#ifndef NET_SKB_PAD

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@ -185,7 +185,7 @@ Signed-off-by: Jonas Gorski <jogo@openwrt.org>
cfg->fc_flags |= RTF_REJECT;
if (rtm->rtm_type == RTN_LOCAL)
@@ -6349,6 +6380,8 @@ static int ip6_route_dev_notify(struct n
@@ -6357,6 +6388,8 @@ static int ip6_route_dev_notify(struct n
#ifdef CONFIG_IPV6_MULTIPLE_TABLES
net->ipv6.ip6_prohibit_entry->dst.dev = dev;
net->ipv6.ip6_prohibit_entry->rt6i_idev = in6_dev_get(dev);
@ -194,7 +194,7 @@ Signed-off-by: Jonas Gorski <jogo@openwrt.org>
net->ipv6.ip6_blk_hole_entry->dst.dev = dev;
net->ipv6.ip6_blk_hole_entry->rt6i_idev = in6_dev_get(dev);
#endif
@@ -6360,6 +6393,7 @@ static int ip6_route_dev_notify(struct n
@@ -6368,6 +6401,7 @@ static int ip6_route_dev_notify(struct n
in6_dev_put_clear(&net->ipv6.ip6_null_entry->rt6i_idev);
#ifdef CONFIG_IPV6_MULTIPLE_TABLES
in6_dev_put_clear(&net->ipv6.ip6_prohibit_entry->rt6i_idev);
@ -202,7 +202,7 @@ Signed-off-by: Jonas Gorski <jogo@openwrt.org>
in6_dev_put_clear(&net->ipv6.ip6_blk_hole_entry->rt6i_idev);
#endif
}
@@ -6555,6 +6589,8 @@ static int __net_init ip6_route_net_init
@@ -6563,6 +6597,8 @@ static int __net_init ip6_route_net_init
#ifdef CONFIG_IPV6_MULTIPLE_TABLES
net->ipv6.fib6_has_custom_rules = false;
@ -211,7 +211,7 @@ Signed-off-by: Jonas Gorski <jogo@openwrt.org>
net->ipv6.ip6_prohibit_entry = kmemdup(&ip6_prohibit_entry_template,
sizeof(*net->ipv6.ip6_prohibit_entry),
GFP_KERNEL);
@@ -6565,11 +6601,21 @@ static int __net_init ip6_route_net_init
@@ -6573,11 +6609,21 @@ static int __net_init ip6_route_net_init
ip6_template_metrics, true);
INIT_LIST_HEAD(&net->ipv6.ip6_prohibit_entry->dst.rt_uncached);
@ -234,7 +234,7 @@ Signed-off-by: Jonas Gorski <jogo@openwrt.org>
net->ipv6.ip6_blk_hole_entry->dst.ops = &net->ipv6.ip6_dst_ops;
dst_init_metrics(&net->ipv6.ip6_blk_hole_entry->dst,
ip6_template_metrics, true);
@@ -6596,6 +6642,8 @@ out:
@@ -6604,6 +6650,8 @@ out:
return ret;
#ifdef CONFIG_IPV6_MULTIPLE_TABLES
@ -243,7 +243,7 @@ Signed-off-by: Jonas Gorski <jogo@openwrt.org>
out_ip6_prohibit_entry:
kfree(net->ipv6.ip6_prohibit_entry);
out_ip6_null_entry:
@@ -6615,6 +6663,7 @@ static void __net_exit ip6_route_net_exi
@@ -6623,6 +6671,7 @@ static void __net_exit ip6_route_net_exi
kfree(net->ipv6.ip6_null_entry);
#ifdef CONFIG_IPV6_MULTIPLE_TABLES
kfree(net->ipv6.ip6_prohibit_entry);
@ -251,7 +251,7 @@ Signed-off-by: Jonas Gorski <jogo@openwrt.org>
kfree(net->ipv6.ip6_blk_hole_entry);
#endif
dst_entries_destroy(&net->ipv6.ip6_dst_ops);
@@ -6698,6 +6747,9 @@ void __init ip6_route_init_special_entri
@@ -6706,6 +6755,9 @@ void __init ip6_route_init_special_entri
init_net.ipv6.ip6_prohibit_entry->rt6i_idev = in6_dev_get(init_net.loopback_dev);
init_net.ipv6.ip6_blk_hole_entry->dst.dev = init_net.loopback_dev;
init_net.ipv6.ip6_blk_hole_entry->rt6i_idev = in6_dev_get(init_net.loopback_dev);

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@ -18,7 +18,7 @@ Signed-off-by: Felix Fietkau <nbd@nbd.name>
--- a/net/netfilter/nf_tables_api.c
+++ b/net/netfilter/nf_tables_api.c
@@ -8658,7 +8658,7 @@ static int nft_register_flowtable_net_ho
@@ -8638,7 +8638,7 @@ static int nft_register_flowtable_net_ho
err = flowtable->data.type->setup(&flowtable->data,
hook->ops.dev,
FLOW_BLOCK_BIND);

View File

@ -93,7 +93,7 @@ Signed-off-by: Maxime Chevallier <maxime.chevallier@bootlin.com>
+#endif
--- a/include/linux/skbuff.h
+++ b/include/linux/skbuff.h
@@ -4769,6 +4769,9 @@ enum skb_ext_id {
@@ -4792,6 +4792,9 @@ enum skb_ext_id {
#if IS_ENABLED(CONFIG_MCTP_FLOWS)
SKB_EXT_MCTP,
#endif