CVSS: 6.2EPSS: 0%CPEs: 2EXPL: 0CVE-2021-47147 – ptp: ocp: Fix a resource leak in an error handling path
https://notcve.org/view.php?id=CVE-2021-47147
In the Linux kernel, the following vulnerability has been resolved: ptp: ocp: Fix a resource leak in an error handling path If an error occurs after a successful 'pci_ioremap_bar()' call, it must be undone by a corresponding 'pci_iounmap()' call, as already done in the remove function. En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: ptp: ocp: corrige una fuga de recursos en una ruta de manejo de errores. Si se produce un error después de una llamada exitosa a 'pci_ioremap_bar()', se debe deshacer mediante el correspondiente 'pci_iounmap()' 'llamar, como ya se hizo en la función de eliminación. • https://git.kernel.org/stable/c/a7e1abad13f3f0366ee625831fecda2b603cdc17 https://git.kernel.org/stable/c/0e38e702f1152479e6afac34f151dbfd99417f99 https://git.kernel.org/stable/c/9c1bb37f8cad5e2ee1933fa1da9a6baa7876a8e4 •
CVSS: -EPSS: 0%CPEs: 8EXPL: 0CVE-2021-47146 – mld: fix panic in mld_newpack()
https://notcve.org/view.php?id=CVE-2021-47146
In the Linux kernel, the following vulnerability has been resolved: mld: fix panic in mld_newpack() mld_newpack() doesn't allow to allocate high order page, only order-0 allocation is allowed. If headroom size is too large, a kernel panic could occur in skb_put(). Test commands: ip netns del A ip netns del B ip netns add A ip netns add B ip link add veth0 type veth peer name veth1 ip link set veth0 netns A ip link set veth1 netns B ip netns exec A ip link set lo up ip netns exec A ip link set veth0 up ip netns exec A ip -6 a a 2001:db8:0::1/64 dev veth0 ip netns exec B ip link set lo up ip netns exec B ip link set veth1 up ip netns exec B ip -6 a a 2001:db8:0::2/64 dev veth1 for i in {1..99} do let A=$i-1 ip netns exec A ip link add ip6gre$i type ip6gre \ local 2001:db8:$A::1 remote 2001:db8:$A::2 encaplimit 100 ip netns exec A ip -6 a a 2001:db8:$i::1/64 dev ip6gre$i ip netns exec A ip link set ip6gre$i up ip netns exec B ip link add ip6gre$i type ip6gre \ local 2001:db8:$A::2 remote 2001:db8:$A::1 encaplimit 100 ip netns exec B ip -6 a a 2001:db8:$i::2/64 dev ip6gre$i ip netns exec B ip link set ip6gre$i up done Splat looks like: kernel BUG at net/core/skbuff.c:110! invalid opcode: 0000 [#1] SMP DEBUG_PAGEALLOC KASAN PTI CPU: 0 PID: 7 Comm: kworker/0:1 Not tainted 5.12.0+ #891 Workqueue: ipv6_addrconf addrconf_dad_work RIP: 0010:skb_panic+0x15d/0x15f Code: 92 fe 4c 8b 4c 24 10 53 8b 4d 70 45 89 e0 48 c7 c7 00 ae 79 83 41 57 41 56 41 55 48 8b 54 24 a6 26 f9 ff <0f> 0b 48 8b 6c 24 20 89 34 24 e8 4a 4e 92 fe 8b 34 24 48 c7 c1 20 RSP: 0018:ffff88810091f820 EFLAGS: 00010282 RAX: 0000000000000089 RBX: ffff8881086e9000 RCX: 0000000000000000 RDX: 0000000000000089 RSI: 0000000000000008 RDI: ffffed1020123efb RBP: ffff888005f6eac0 R08: ffffed1022fc0031 R09: ffffed1022fc0031 R10: ffff888117e00187 R11: ffffed1022fc0030 R12: 0000000000000028 R13: ffff888008284eb0 R14: 0000000000000ed8 R15: 0000000000000ec0 FS: 0000000000000000(0000) GS:ffff888117c00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f8b801c5640 CR3: 0000000033c2c006 CR4: 00000000003706f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: ? ip6_mc_hdr.isra.26.constprop.46+0x12a/0x600 ? ip6_mc_hdr.isra.26.constprop.46+0x12a/0x600 skb_put.cold.104+0x22/0x22 ip6_mc_hdr.isra.26.constprop.46+0x12a/0x600 ? rcu_read_lock_sched_held+0x91/0xc0 mld_newpack+0x398/0x8f0 ? • https://git.kernel.org/stable/c/72e09ad107e78d69ff4d3b97a69f0aad2b77280f https://git.kernel.org/stable/c/0e35b7457b7b6e73ffeaaca1a577fdf1af0feca1 https://git.kernel.org/stable/c/17728616a4c85baf0edc975c60ba4e4157684d9a https://git.kernel.org/stable/c/221142038f36d9f28b64e83e954774da4d4ccd17 https://git.kernel.org/stable/c/4b77ad9097067b31237eeeee0bf70f80849680a0 https://git.kernel.org/stable/c/37d697759958d111439080bab7e14d2b0e7b39f5 https://git.kernel.org/stable/c/beb39adb150f8f3b516ddf7c39835a9788704d23 https://git.kernel.org/stable/c/a76fb9ba545289379acf409653ad5f744 •
CVSS: -EPSS: 0%CPEs: 8EXPL: 0CVE-2021-47145 – btrfs: do not BUG_ON in link_to_fixup_dir
https://notcve.org/view.php?id=CVE-2021-47145
In the Linux kernel, the following vulnerability has been resolved: btrfs: do not BUG_ON in link_to_fixup_dir While doing error injection testing I got the following panic kernel BUG at fs/btrfs/tree-log.c:1862! invalid opcode: 0000 [#1] SMP NOPTI CPU: 1 PID: 7836 Comm: mount Not tainted 5.13.0-rc1+ #305 Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.13.0-2.fc32 04/01/2014 RIP: 0010:link_to_fixup_dir+0xd5/0xe0 RSP: 0018:ffffb5800180fa30 EFLAGS: 00010216 RAX: fffffffffffffffb RBX: 00000000fffffffb RCX: ffff8f595287faf0 RDX: ffffb5800180fa37 RSI: ffff8f5954978800 RDI: 0000000000000000 RBP: ffff8f5953af9450 R08: 0000000000000019 R09: 0000000000000001 R10: 000151f408682970 R11: 0000000120021001 R12: ffff8f5954978800 R13: ffff8f595287faf0 R14: ffff8f5953c77dd0 R15: 0000000000000065 FS: 00007fc5284c8c40(0000) GS:ffff8f59bbd00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fc5287f47c0 CR3: 000000011275e002 CR4: 0000000000370ee0 Call Trace: replay_one_buffer+0x409/0x470 ? btree_read_extent_buffer_pages+0xd0/0x110 walk_up_log_tree+0x157/0x1e0 walk_log_tree+0xa6/0x1d0 btrfs_recover_log_trees+0x1da/0x360 ? replay_one_extent+0x7b0/0x7b0 open_ctree+0x1486/0x1720 btrfs_mount_root.cold+0x12/0xea ? __kmalloc_track_caller+0x12f/0x240 legacy_get_tree+0x24/0x40 vfs_get_tree+0x22/0xb0 vfs_kern_mount.part.0+0x71/0xb0 btrfs_mount+0x10d/0x380 ? • https://git.kernel.org/stable/c/76bfd8ac20bebeae599452a03dfc5724c0475dcf https://git.kernel.org/stable/c/e934c4ee17b33bafb0444f2f9766cda7166d3c40 https://git.kernel.org/stable/c/0eaf383c6a4a83c09f60fd07a1bea9f1a9181611 https://git.kernel.org/stable/c/6eccfb28f8dca70c9b1b3bb3194ca54cbe73a9fa https://git.kernel.org/stable/c/0ed102453aa1cd12fefde8f6b60b9519b0b1f003 https://git.kernel.org/stable/c/7e13db503918820e6333811cdc6f151dcea5090a https://git.kernel.org/stable/c/b545442133580dcb2f2496133bf850824d41255c https://git.kernel.org/stable/c/91df99a6eb50d5a1bc70fff4a09a0b7ae •
CVSS: -EPSS: 0%CPEs: 5EXPL: 0CVE-2021-47144 – drm/amd/amdgpu: fix refcount leak
https://notcve.org/view.php?id=CVE-2021-47144
In the Linux kernel, the following vulnerability has been resolved: drm/amd/amdgpu: fix refcount leak [Why] the gem object rfb->base.obj[0] is get according to num_planes in amdgpufb_create, but is not put according to num_planes [How] put rfb->base.obj[0] in amdgpu_fbdev_destroy according to num_planes En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: drm/amd/amdgpu: corrige la fuga de refcount [Por qué] el objeto gema rfb->base.obj[0] se obtiene según num_planes en amdgpufb_create, pero no se coloca según num_planes en amdgpufb_create num_planes [Cómo] poner rfb->base.obj[0] en amdgpu_fbdev_destroy según num_planes • https://git.kernel.org/stable/c/599e5d61ace952b0bb9bd942b198bbd0cfded1d7 https://git.kernel.org/stable/c/dde2656e0bbb2ac7d83a7bd95a8d5c3c95bbc009 https://git.kernel.org/stable/c/9fdb8ed37a3a44f9c49372b69f87fd5f61cb3240 https://git.kernel.org/stable/c/95a4ec905e51a30c64cf2d78b04a7acbeae5ca94 https://git.kernel.org/stable/c/fa7e6abc75f3d491bc561734312d065dc9dc2a77 •
CVSS: -EPSS: 0%CPEs: 3EXPL: 0CVE-2021-47143 – net/smc: remove device from smcd_dev_list after failed device_add()
https://notcve.org/view.php?id=CVE-2021-47143
In the Linux kernel, the following vulnerability has been resolved: net/smc: remove device from smcd_dev_list after failed device_add() If the device_add() for a smcd_dev fails, there's no cleanup step that rolls back the earlier list_add(). The device subsequently gets freed, and we end up with a corrupted list. Add some error handling that removes the device from the list. En el kernel de Linux, se resolvió la siguiente vulnerabilidad: net/smc: eliminar dispositivo de smcd_dev_list después de fallar device_add() Si falla el dispositivo_add() para smcd_dev, no hay ningún paso de limpieza que revierta el list_add() anterior. Posteriormente, el dispositivo se libera y terminamos con una lista corrupta. Agregue algún manejo de errores que elimine el dispositivo de la lista. • https://git.kernel.org/stable/c/c6ba7c9ba43de1b57e9a53946e7ff988554c84ed https://git.kernel.org/stable/c/8b2cdc004d21a7255f219706dca64411108f7897 https://git.kernel.org/stable/c/40588782f1016c655ae1d302892f61d35af96842 https://git.kernel.org/stable/c/444d7be9532dcfda8e0385226c862fd7e986f607 •