CVSS: -EPSS: 0%CPEs: 8EXPL: 0CVE-2022-49011 – hwmon: (coretemp) fix pci device refcount leak in nv1a_ram_new()
https://notcve.org/view.php?id=CVE-2022-49011
In the Linux kernel, the following vulnerability has been resolved: hwmon: (coretemp) fix pci device refcount leak in nv1a_ram_new() As comment of pci_get_domain_bus_and_slot() says, it returns a pci device with refcount increment, when finish using it, the caller must decrement the reference count by calling pci_dev_put(). So call it after using to avoid refcount leak. • https://git.kernel.org/stable/c/14513ee696a0cd12a19318e433b75a786808adc3 https://git.kernel.org/stable/c/bb75a0d1223d43f97089841aecb28a9b4de687a9 https://git.kernel.org/stable/c/0dd1da5a15eeecb2fe4cf131b3216fb455af783c https://git.kernel.org/stable/c/2f74cffc7c85f770b1b1833dccb03b8cde3be102 https://git.kernel.org/stable/c/ea5844f946b1ec5c0b7c115cd7684f34fd48021b https://git.kernel.org/stable/c/c40db1e5f316792b557d2be37e447c20d9ac4635 https://git.kernel.org/stable/c/6e035d5a2a6b907cfce9a80c5f442c2e459cd34e https://git.kernel.org/stable/c/f598da27acbeee414679cacd14294db3e •
CVSS: 5.5EPSS: 0%CPEs: 8EXPL: 0CVE-2022-49010 – hwmon: (coretemp) Check for null before removing sysfs attrs
https://notcve.org/view.php?id=CVE-2022-49010
In the Linux kernel, the following vulnerability has been resolved: hwmon: (coretemp) Check for null before removing sysfs attrs If coretemp_add_core() gets an error then pdata->core_data[indx] is already NULL and has been kfreed. Don't pass that to sysfs_remove_group() as that will crash in sysfs_remove_group(). [Shortened for readability] [91854.020159] sysfs: cannot create duplicate filename '/devices/platform/coretemp.0/hwmon/hwmon2/temp20_label' <cpu offline> [91855.126115] BUG: kernel NULL pointer dereference, address: 0000000000000188 [91855.165103] #PF: supervisor read access in kernel mode [91855.194506] #PF: error_code(0x0000) - not-present page [91855.224445] PGD 0 P4D 0 [91855.238508] Oops: 0000 [#1] PREEMPT SMP PTI ... [91855.342716] RIP: 0010:sysfs_remove_group+0xc/0x80 ... [91855.796571] Call Trace: [91855.810524] coretemp_cpu_offline+0x12b/0x1dd [coretemp] [91855.841738] ? coretemp_cpu_online+0x180/0x180 [coretemp] [91855.871107] cpuhp_invoke_callback+0x105/0x4b0 [91855.893432] cpuhp_thread_fun+0x8e/0x150 ... Fix this by checking for NULL first. • https://git.kernel.org/stable/c/199e0de7f5df31a4fc485d4aaaf8a07718252ace https://git.kernel.org/stable/c/fb503d077ff7b43913503eaf72995d1239028b99 https://git.kernel.org/stable/c/070d5ea4a0592a37ad96ce7f7b6b024f90bb009f https://git.kernel.org/stable/c/280110db1a7d62ad635b103bafc3ae96e8bef75c https://git.kernel.org/stable/c/89eecabe6a47403237f45aafd7d24f93cb973653 https://git.kernel.org/stable/c/f06e0cd01eab954bd5f2190c9faa79bb5357e05b https://git.kernel.org/stable/c/7692700ac818866d138a8de555130a6e70e6ac16 https://git.kernel.org/stable/c/ae6c8b6e5d5628df1c475c0a8fca1465e • CWE-476: NULL Pointer Dereference •
CVSS: -EPSS: 0%CPEs: 2EXPL: 0CVE-2022-49009 – hwmon: (asus-ec-sensors) Add checks for devm_kcalloc
https://notcve.org/view.php?id=CVE-2022-49009
In the Linux kernel, the following vulnerability has been resolved: hwmon: (asus-ec-sensors) Add checks for devm_kcalloc As the devm_kcalloc may return NULL, the return value needs to be checked to avoid NULL poineter dereference. • https://git.kernel.org/stable/c/d0ddfd241e5719d696bc0b081e260db69d368668 https://git.kernel.org/stable/c/a41ec58ac352fd176d5808af847663dc890f6053 https://git.kernel.org/stable/c/9bdc112be727cf1ba65be79541147f960c3349d8 •
CVSS: -EPSS: 0%CPEs: 2EXPL: 0CVE-2022-49008 – can: can327: can327_feed_frame_to_netdev(): fix potential skb leak when netdev is down
https://notcve.org/view.php?id=CVE-2022-49008
In the Linux kernel, the following vulnerability has been resolved: can: can327: can327_feed_frame_to_netdev(): fix potential skb leak when netdev is down In can327_feed_frame_to_netdev(), it did not free the skb when netdev is down, and all callers of can327_feed_frame_to_netdev() did not free allocated skb too. That would trigger skb leak. Fix it by adding kfree_skb() in can327_feed_frame_to_netdev() when netdev is down. Not tested, just compiled. • https://git.kernel.org/stable/c/43da2f07622f41376c7ddab8f73dc2b1d3ab9715 https://git.kernel.org/stable/c/797b1d9fc0e1f4351e4ad49b078c1a3cdc0d4a08 https://git.kernel.org/stable/c/8fa452cfafed521aaf5a18c71003fe24b1ee6141 •
CVSS: -EPSS: 0%CPEs: 8EXPL: 0CVE-2022-49007 – nilfs2: fix NULL pointer dereference in nilfs_palloc_commit_free_entry()
https://notcve.org/view.php?id=CVE-2022-49007
In the Linux kernel, the following vulnerability has been resolved: nilfs2: fix NULL pointer dereference in nilfs_palloc_commit_free_entry() Syzbot reported a null-ptr-deref bug: NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds general protection fault, probably for non-canonical address 0xdffffc0000000002: 0000 [#1] PREEMPT SMP KASAN KASAN: null-ptr-deref in range [0x0000000000000010-0x0000000000000017] CPU: 1 PID: 3603 Comm: segctord Not tainted 6.1.0-rc2-syzkaller-00105-gb229b6ca5abb #0 Hardware name: Google Compute Engine/Google Compute Engine, BIOS Google 10/11/2022 RIP: 0010:nilfs_palloc_commit_free_entry+0xe5/0x6b0 fs/nilfs2/alloc.c:608 Code: 00 00 00 00 fc ff df 80 3c 02 00 0f 85 cd 05 00 00 48 b8 00 00 00 00 00 fc ff df 4c 8b 73 08 49 8d 7e 10 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 26 05 00 00 49 8b 46 10 be a6 00 00 00 48 c7 c7 RSP: 0018:ffffc90003dff830 EFLAGS: 00010212 RAX: dffffc0000000000 RBX: ffff88802594e218 RCX: 000000000000000d RDX: 0000000000000002 RSI: 0000000000002000 RDI: 0000000000000010 RBP: ffff888071880222 R08: 0000000000000005 R09: 000000000000003f R10: 000000000000000d R11: 0000000000000000 R12: ffff888071880158 R13: ffff88802594e220 R14: 0000000000000000 R15: 0000000000000004 FS: 0000000000000000(0000) GS:ffff8880b9b00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fb1c08316a8 CR3: 0000000018560000 CR4: 0000000000350ee0 Call Trace: <TASK> nilfs_dat_commit_free fs/nilfs2/dat.c:114 [inline] nilfs_dat_commit_end+0x464/0x5f0 fs/nilfs2/dat.c:193 nilfs_dat_commit_update+0x26/0x40 fs/nilfs2/dat.c:236 nilfs_btree_commit_update_v+0x87/0x4a0 fs/nilfs2/btree.c:1940 nilfs_btree_commit_propagate_v fs/nilfs2/btree.c:2016 [inline] nilfs_btree_propagate_v fs/nilfs2/btree.c:2046 [inline] nilfs_btree_propagate+0xa00/0xd60 fs/nilfs2/btree.c:2088 nilfs_bmap_propagate+0x73/0x170 fs/nilfs2/bmap.c:337 nilfs_collect_file_data+0x45/0xd0 fs/nilfs2/segment.c:568 nilfs_segctor_apply_buffers+0x14a/0x470 fs/nilfs2/segment.c:1018 nilfs_segctor_scan_file+0x3f4/0x6f0 fs/nilfs2/segment.c:1067 nilfs_segctor_collect_blocks fs/nilfs2/segment.c:1197 [inline] nilfs_segctor_collect fs/nilfs2/segment.c:1503 [inline] nilfs_segctor_do_construct+0x12fc/0x6af0 fs/nilfs2/segment.c:2045 nilfs_segctor_construct+0x8e3/0xb30 fs/nilfs2/segment.c:2379 nilfs_segctor_thread_construct fs/nilfs2/segment.c:2487 [inline] nilfs_segctor_thread+0x3c3/0xf30 fs/nilfs2/segment.c:2570 kthread+0x2e4/0x3a0 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306 </TASK> ... If DAT metadata file is corrupted on disk, there is a case where req->pr_desc_bh is NULL and blocknr is 0 at nilfs_dat_commit_end() during a b-tree operation that cascadingly updates ancestor nodes of the b-tree, because nilfs_dat_commit_alloc() for a lower level block can initialize the blocknr on the same DAT entry between nilfs_dat_prepare_end() and nilfs_dat_commit_end(). If this happens, nilfs_dat_commit_end() calls nilfs_dat_commit_free() without valid buffer heads in req->pr_desc_bh and req->pr_bitmap_bh, and causes the NULL pointer dereference above in nilfs_palloc_commit_free_entry() function, which leads to a crash. Fix this by adding a NULL check on req->pr_desc_bh and req->pr_bitmap_bh before nilfs_palloc_commit_free_entry() in nilfs_dat_commit_free(). This also calls nilfs_error() in that case to notify that there is a fatal flaw in the filesystem metadata and prevent further operations. • https://git.kernel.org/stable/c/2f2c59506ae39496588ceb8b88bdbdbaed895d63 https://git.kernel.org/stable/c/165c7a3b27a3857ebf57f626b9f38b48b6792e68 https://git.kernel.org/stable/c/bc3fd3293887b4cf84a9109700faeb82de533c89 https://git.kernel.org/stable/c/9a130b72e6bd1fb07fc3cde839dc6fb53da76f07 https://git.kernel.org/stable/c/e858917ab785afe83c14f5ac141301216ccda847 https://git.kernel.org/stable/c/33021419fd81efd3d729a7f19341ba4b98fe66ce https://git.kernel.org/stable/c/381b84f60e549ea98cec4666c6c728b1b3318756 https://git.kernel.org/stable/c/f0a0ccda18d6fd826d7c7e7ad48a6ed61 •