CVSS: -EPSS: 0%CPEs: 3EXPL: 0CVE-2022-48961 – net: mdio: fix unbalanced fwnode reference count in mdio_device_release()
https://notcve.org/view.php?id=CVE-2022-48961
In the Linux kernel, the following vulnerability has been resolved: net: mdio: fix unbalanced fwnode reference count in mdio_device_release() There is warning report about of_node refcount leak while probing mdio device: OF: ERROR: memory leak, expected refcount 1 instead of 2, of_node_get()/of_node_put() unbalanced - destroy cset entry: attach overlay node /spi/soc@0/mdio@710700c0/ethernet@4 In of_mdiobus_register_device(), we increase fwnode refcount by fwnode_handle_get() before associating the of_node with mdio device, but it has never been decreased in normal path. Since that, in mdio_device_release(), it needs to call fwnode_handle_put() in addition instead of calling kfree() directly. After above, just calling mdio_device_free() in the error handle path of of_mdiobus_register_device() is enough to keep the refcount balanced. • https://git.kernel.org/stable/c/a9049e0c513c4521dbfaa302af8ed08b3366b41f https://git.kernel.org/stable/c/16854177745a5648f8ec322353b432e18460f43a https://git.kernel.org/stable/c/a5c6de1a6656b8cc6bce7cb3d9874dd7df4968c3 https://git.kernel.org/stable/c/cb37617687f2bfa5b675df7779f869147c9002bd •
CVSS: -EPSS: 0%CPEs: 8EXPL: 0CVE-2022-48960 – net: hisilicon: Fix potential use-after-free in hix5hd2_rx()
https://notcve.org/view.php?id=CVE-2022-48960
In the Linux kernel, the following vulnerability has been resolved: net: hisilicon: Fix potential use-after-free in hix5hd2_rx() The skb is delivered to napi_gro_receive() which may free it, after calling this, dereferencing skb may trigger use-after-free. • https://git.kernel.org/stable/c/57c5bc9ad7d799e9507ba6e993398d2c55f03fab https://git.kernel.org/stable/c/179499e7a240b2ef590f05eb379c810c26bbc8a4 https://git.kernel.org/stable/c/8067cd244cea2c332f8326842fd10158fa2cb64f https://git.kernel.org/stable/c/3a4eddd1cb023a71df4152fcc76092953e6fe95a https://git.kernel.org/stable/c/1b6360a093ab8969c91a30bb58b753282e2ced4c https://git.kernel.org/stable/c/93aaa4bb72e388f6a4887541fd3d18b84f1b5ddc https://git.kernel.org/stable/c/b8ce0e6f9f88a6bb49d291498377e61ea27a5387 https://git.kernel.org/stable/c/b6307f7a2fc1c5407b6176f2af34a9521 •
CVSS: -EPSS: 0%CPEs: 8EXPL: 0CVE-2022-48958 – ethernet: aeroflex: fix potential skb leak in greth_init_rings()
https://notcve.org/view.php?id=CVE-2022-48958
In the Linux kernel, the following vulnerability has been resolved: ethernet: aeroflex: fix potential skb leak in greth_init_rings() The greth_init_rings() function won't free the newly allocated skb when dma_mapping_error() returns error, so add dev_kfree_skb() to fix it. Compile tested only. • https://git.kernel.org/stable/c/d4c41139df6e74c6fff0cbac43e51cab782133be https://git.kernel.org/stable/c/223654e2e2c8d05347cd8e300f8d1ec6023103dd https://git.kernel.org/stable/c/cb1e293f858e5e1152b8791047ed4bdaaf392189 https://git.kernel.org/stable/c/bfaa8f6c5b84b295dd73b0138b57c5555ca12b1c https://git.kernel.org/stable/c/99669d94ce145389f1d6f197e6e18ed50d43fb76 https://git.kernel.org/stable/c/87277bdf2c370ab2d07cfe77dfa9b37f82bbe1e5 https://git.kernel.org/stable/c/c7adcbd0fd3fde1b19150c3e955fb4a30c5bd9b7 https://git.kernel.org/stable/c/dd62867a6383f78f75f07039394aac259 •
CVSS: -EPSS: 0%CPEs: 7EXPL: 0CVE-2022-48956 – ipv6: avoid use-after-free in ip6_fragment()
https://notcve.org/view.php?id=CVE-2022-48956
In the Linux kernel, the following vulnerability has been resolved: ipv6: avoid use-after-free in ip6_fragment() Blamed commit claimed rcu_read_lock() was held by ip6_fragment() callers. It seems to not be always true, at least for UDP stack. syzbot reported: BUG: KASAN: use-after-free in ip6_dst_idev include/net/ip6_fib.h:245 [inline] BUG: KASAN: use-after-free in ip6_fragment+0x2724/0x2770 net/ipv6/ip6_output.c:951 Read of size 8 at addr ffff88801d403e80 by task syz-executor.3/7618 CPU: 1 PID: 7618 Comm: syz-executor.3 Not tainted 6.1.0-rc6-syzkaller-00012-g4312098baf37 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 Call Trace: <TASK> __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0xd1/0x138 lib/dump_stack.c:106 print_address_description mm/kasan/report.c:284 [inline] print_report+0x15e/0x45d mm/kasan/report.c:395 kasan_report+0xbf/0x1f0 mm/kasan/report.c:495 ip6_dst_idev include/net/ip6_fib.h:245 [inline] ip6_fragment+0x2724/0x2770 net/ipv6/ip6_output.c:951 __ip6_finish_output net/ipv6/ip6_output.c:193 [inline] ip6_finish_output+0x9a3/0x1170 net/ipv6/ip6_output.c:206 NF_HOOK_COND include/linux/netfilter.h:291 [inline] ip6_output+0x1f1/0x540 net/ipv6/ip6_output.c:227 dst_output include/net/dst.h:445 [inline] ip6_local_out+0xb3/0x1a0 net/ipv6/output_core.c:161 ip6_send_skb+0xbb/0x340 net/ipv6/ip6_output.c:1966 udp_v6_send_skb+0x82a/0x18a0 net/ipv6/udp.c:1286 udp_v6_push_pending_frames+0x140/0x200 net/ipv6/udp.c:1313 udpv6_sendmsg+0x18da/0x2c80 net/ipv6/udp.c:1606 inet6_sendmsg+0x9d/0xe0 net/ipv6/af_inet6.c:665 sock_sendmsg_nosec net/socket.c:714 [inline] sock_sendmsg+0xd3/0x120 net/socket.c:734 sock_write_iter+0x295/0x3d0 net/socket.c:1108 call_write_iter include/linux/fs.h:2191 [inline] new_sync_write fs/read_write.c:491 [inline] vfs_write+0x9ed/0xdd0 fs/read_write.c:584 ksys_write+0x1ec/0x250 fs/read_write.c:637 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x39/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7fde3588c0d9 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 f1 19 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007fde365b6168 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 00007fde359ac050 RCX: 00007fde3588c0d9 RDX: 000000000000ffdc RSI: 00000000200000c0 RDI: 000000000000000a RBP: 00007fde358e7ae9 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fde35acfb1f R14: 00007fde365b6300 R15: 0000000000022000 </TASK> Allocated by task 7618: kasan_save_stack+0x22/0x40 mm/kasan/common.c:45 kasan_set_track+0x25/0x30 mm/kasan/common.c:52 __kasan_slab_alloc+0x82/0x90 mm/kasan/common.c:325 kasan_slab_alloc include/linux/kasan.h:201 [inline] slab_post_alloc_hook mm/slab.h:737 [inline] slab_alloc_node mm/slub.c:3398 [inline] slab_alloc mm/slub.c:3406 [inline] __kmem_cache_alloc_lru mm/slub.c:3413 [inline] kmem_cache_alloc+0x2b4/0x3d0 mm/slub.c:3422 dst_alloc+0x14a/0x1f0 net/core/dst.c:92 ip6_dst_alloc+0x32/0xa0 net/ipv6/route.c:344 ip6_rt_pcpu_alloc net/ipv6/route.c:1369 [inline] rt6_make_pcpu_route net/ipv6/route.c:1417 [inline] ip6_pol_route+0x901/0x1190 net/ipv6/route.c:2254 pol_lookup_func include/net/ip6_fib.h:582 [inline] fib6_rule_lookup+0x52e/0x6f0 net/ipv6/fib6_rules.c:121 ip6_route_output_flags_noref+0x2e6/0x380 net/ipv6/route.c:2625 ip6_route_output_flags+0x76/0x320 net/ipv6/route.c:2638 ip6_route_output include/net/ip6_route.h:98 [inline] ip6_dst_lookup_tail+0x5ab/0x1620 net/ipv6/ip6_output.c:1092 ip6_dst_lookup_flow+0x90/0x1d0 net/ipv6/ip6_output.c:1222 ip6_sk_dst_lookup_flow+0x553/0x980 net/ipv6/ip6_output.c:1260 udpv6_sendmsg+0x151d/0x2c80 net/ipv6/udp.c:1554 inet6_sendmsg+0x9d/0xe0 net/ipv6/af_inet6.c:665 sock_sendmsg_nosec n ---truncated--- • https://git.kernel.org/stable/c/1758fd4688eb92c796e75bdb1d256dc558ef9581 https://git.kernel.org/stable/c/b3d7ff8c04a83279fb7641fc4d5aa82a602df7c0 https://git.kernel.org/stable/c/7e0dcd5f3ade221a6126278aca60c8ab4cc3bce9 https://git.kernel.org/stable/c/6b6d3be3661bff2746cab26147bd629aa034e094 https://git.kernel.org/stable/c/8208d7e56b1e579320b9ff3712739ad2e63e1f86 https://git.kernel.org/stable/c/7390c70bd431cbfa6951477e2c80a301643e284b https://git.kernel.org/stable/c/9b1a468a455d8319041528778d0e684a4c062792 https://git.kernel.org/stable/c/803e84867de59a1e5d126666d25eb4860 •
CVSS: -EPSS: 0%CPEs: 4EXPL: 0CVE-2022-48953 – rtc: cmos: Fix event handler registration ordering issue
https://notcve.org/view.php?id=CVE-2022-48953
In the Linux kernel, the following vulnerability has been resolved: rtc: cmos: Fix event handler registration ordering issue Because acpi_install_fixed_event_handler() enables the event automatically on success, it is incorrect to call it before the handler routine passed to it is ready to handle events. Unfortunately, the rtc-cmos driver does exactly the incorrect thing by calling cmos_wake_setup(), which passes rtc_handler() to acpi_install_fixed_event_handler(), before cmos_do_probe(), because rtc_handler() uses dev_get_drvdata() to get to the cmos object pointer and the driver data pointer is only populated in cmos_do_probe(). This leads to a NULL pointer dereference in rtc_handler() on boot if the RTC fixed event happens to be active at the init time. To address this issue, change the initialization ordering of the driver so that cmos_wake_setup() is always called after a successful cmos_do_probe() call. While at it, change cmos_pnp_probe() to call cmos_do_probe() after the initial if () statement used for computing the IRQ argument to be passed to cmos_do_probe() which is cleaner than calling it in each branch of that if () (local variable "irq" can be of type int, because it is passed to that function as an argument of type int). Note that commit 6492fed7d8c9 ("rtc: rtc-cmos: Do not check ACPI_FADT_LOW_POWER_S0") caused this issue to affect a larger number of systems, because previously it only affected systems with ACPI_FADT_LOW_POWER_S0 set, but it is present regardless of that commit. • https://git.kernel.org/stable/c/a474aaedac99ba86e28ef6c912a7647c482db6dd https://git.kernel.org/stable/c/0bcfccb48696aba475f046c2021f0733659ce0ef https://git.kernel.org/stable/c/60c6e563a843032cf6ff84b2fb732cd8754fc10d https://git.kernel.org/stable/c/1ba745fce13d19775100eece30b0bfb8b8b10ea6 https://git.kernel.org/stable/c/4919d3eb2ec0ee364f7e3cf2d99646c1b224fae8 •