CVSS: 5.5EPSS: 0%CPEs: 3EXPL: 0CVE-2024-50226 – cxl/port: Fix use-after-free, permit out-of-order decoder shutdown
https://notcve.org/view.php?id=CVE-2024-50226
In the Linux kernel, the following vulnerability has been resolved: cxl/port: Fix use-after-free, permit out-of-order decoder shutdown In support of investigating an initialization failure report [1], cxl_test was updated to register mock memory-devices after the mock root-port/bus device had been registered. That led to cxl_test crashing with a use-after-free bug with the following signature: cxl_port_attach_region: cxl region3: cxl_host_bridge.0:port3 decoder3.0 add: mem0:decoder7.0 @ 0 next: cxl_switch_uport.0 nr_eps: 1 nr_targets: 1 cxl_port_attach_region: cxl region3: cxl_host_bridge.0:port3 decoder3.0 add: mem4:decoder14.0 @ 1 next: cxl_switch_uport.0 nr_eps: 2 nr_targets: 1 cxl_port_setup_targets: cxl region3: cxl_switch_uport.0:port6 target[0] = cxl_switch_dport.0 for mem0:decoder7.0 @ 0 1) cxl_port_setup_targets: cxl region3: cxl_switch_uport.0:port6 target[1] = cxl_switch_dport.4 for mem4:decoder14.0 @ 1 [..] cxld_unregister: cxl decoder14.0: cxl_region_decode_reset: cxl_region region3: mock_decoder_reset: cxl_port port3: decoder3.0 reset 2) mock_decoder_reset: cxl_port port3: decoder3.0: out of order reset, expected decoder3.1 cxl_endpoint_decoder_release: cxl decoder14.0: [..] cxld_unregister: cxl decoder7.0: 3) cxl_region_decode_reset: cxl_region region3: Oops: general protection fault, probably for non-canonical address 0x6b6b6b6b6b6b6bc3: 0000 [#1] PREEMPT SMP PTI [..] RIP: 0010:to_cxl_port+0x8/0x60 [cxl_core] [..] Call Trace: <TASK> cxl_region_decode_reset+0x69/0x190 [cxl_core] cxl_region_detach+0xe8/0x210 [cxl_core] cxl_decoder_kill_region+0x27/0x40 [cxl_core] cxld_unregister+0x5d/0x60 [cxl_core] At 1) a region has been established with 2 endpoint decoders (7.0 and 14.0). Those endpoints share a common switch-decoder in the topology (3.0). At teardown, 2), decoder14.0 is the first to be removed and hits the "out of order reset case" in the switch decoder. The effect though is that region3 cleanup is aborted leaving it in-tact and referencing decoder14.0. • https://git.kernel.org/stable/c/176baefb2eb5d7a3ddebe3ff803db1fce44574b5 https://git.kernel.org/stable/c/8e1b52c15c81106456437f8e49575040e489e355 https://git.kernel.org/stable/c/78c8454fdce0eeee962be004eb6d99860c80dad1 https://git.kernel.org/stable/c/101c268bd2f37e965a5468353e62d154db38838e https://access.redhat.com/security/cve/CVE-2024-50226 https://bugzilla.redhat.com/show_bug.cgi?id=2324876 •
CVSS: -EPSS: 0%CPEs: 8EXPL: 0CVE-2024-50218 – ocfs2: pass u64 to ocfs2_truncate_inline maybe overflow
https://notcve.org/view.php?id=CVE-2024-50218
In the Linux kernel, the following vulnerability has been resolved: ocfs2: pass u64 to ocfs2_truncate_inline maybe overflow Syzbot reported a kernel BUG in ocfs2_truncate_inline. There are two reasons for this: first, the parameter value passed is greater than ocfs2_max_inline_data_with_xattr, second, the start and end parameters of ocfs2_truncate_inline are "unsigned int". So, we need to add a sanity check for byte_start and byte_len right before ocfs2_truncate_inline() in ocfs2_remove_inode_range(), if they are greater than ocfs2_max_inline_data_with_xattr return -EINVAL. • https://git.kernel.org/stable/c/1afc32b952335f665327a1a9001ba1b44bb76fd9 https://git.kernel.org/stable/c/27d95867bee806cdc448d122bd99f1d8b0544035 https://git.kernel.org/stable/c/95fbed8ae8c32c0977e6be1721c190d8fea23f2f https://git.kernel.org/stable/c/70767689ec6ee5f05fb0a2c17d7ec1927946e486 https://git.kernel.org/stable/c/ecd62f684386fa64f9c0cea92eea361f4e6444c2 https://git.kernel.org/stable/c/2fe5d62e122b040ce7fc4d31aa7fa96ae328cefc https://git.kernel.org/stable/c/88f97a4b5843ce21c1286e082c02a5fb4d8eb473 https://git.kernel.org/stable/c/0b6b8c2055784261de3fb641c5d0d6396 •
CVSS: -EPSS: 0%CPEs: 2EXPL: 0CVE-2024-50217 – btrfs: fix use-after-free of block device file in __btrfs_free_extra_devids()
https://notcve.org/view.php?id=CVE-2024-50217
In the Linux kernel, the following vulnerability has been resolved: btrfs: fix use-after-free of block device file in __btrfs_free_extra_devids() Mounting btrfs from two images (which have the same one fsid and two different dev_uuids) in certain executing order may trigger an UAF for variable 'device->bdev_file' in __btrfs_free_extra_devids(). And following are the details: 1. Attach image_1 to loop0, attach image_2 to loop1, and scan btrfs devices by ioctl(BTRFS_IOC_SCAN_DEV): / btrfs_device_1 → loop0 fs_device \ btrfs_device_2 → loop1 2. mount /dev/loop0 /mnt btrfs_open_devices btrfs_device_1->bdev_file = btrfs_get_bdev_and_sb(loop0) btrfs_device_2->bdev_file = btrfs_get_bdev_and_sb(loop1) btrfs_fill_super open_ctree fail: btrfs_close_devices // -ENOMEM btrfs_close_bdev(btrfs_device_1) fput(btrfs_device_1->bdev_file) // btrfs_device_1->bdev_file is freed btrfs_close_bdev(btrfs_device_2) fput(btrfs_device_2->bdev_file) 3. mount /dev/loop1 /mnt btrfs_open_devices btrfs_get_bdev_and_sb(&bdev_file) // EIO, btrfs_device_1->bdev_file is not assigned, // which points to a freed memory area btrfs_device_2->bdev_file = btrfs_get_bdev_and_sb(loop1) btrfs_fill_super open_ctree btrfs_free_extra_devids if (btrfs_device_1->bdev_file) fput(btrfs_device_1->bdev_file) // UAF ! Fix it by setting 'device->bdev_file' as 'NULL' after closing the btrfs_device in btrfs_close_one_device(). • https://git.kernel.org/stable/c/142388194191a3edc9ba01cfcfd8b691e0971fb2 https://git.kernel.org/stable/c/47a83f8df39545f3f552bb6a1b6d9c30e37621dd https://git.kernel.org/stable/c/aec8e6bf839101784f3ef037dcdb9432c3f32343 •
CVSS: -EPSS: 0%CPEs: 4EXPL: 0CVE-2024-50215 – nvmet-auth: assign dh_key to NULL after kfree_sensitive
https://notcve.org/view.php?id=CVE-2024-50215
In the Linux kernel, the following vulnerability has been resolved: nvmet-auth: assign dh_key to NULL after kfree_sensitive ctrl->dh_key might be used across multiple calls to nvmet_setup_dhgroup() for the same controller. So it's better to nullify it after release on error path in order to avoid double free later in nvmet_destroy_auth(). Found by Linux Verification Center (linuxtesting.org) with Svace. • https://git.kernel.org/stable/c/7a277c37d3522e9b2777d762bbbcecafae2b1f8d https://git.kernel.org/stable/c/c94e965f766321641ec38e4eece9ce8884543244 https://git.kernel.org/stable/c/c60af16e1d6cc2237d58336546d6adfc067b6b8f https://git.kernel.org/stable/c/e61bd51e44409495d75847e9230736593e4c8710 https://git.kernel.org/stable/c/d2f551b1f72b4c508ab9298419f6feadc3b5d791 •
CVSS: -EPSS: 0%CPEs: 3EXPL: 0CVE-2024-50211 – udf: refactor inode_bmap() to handle error
https://notcve.org/view.php?id=CVE-2024-50211
In the Linux kernel, the following vulnerability has been resolved: udf: refactor inode_bmap() to handle error Refactor inode_bmap() to handle error since udf_next_aext() can return error now. On situations like ftruncate, udf_extend_file() can now detect errors and bail out early without resorting to checking for particular offsets and assuming internal behavior of these functions. • https://git.kernel.org/stable/c/493447dd8336607fce426f7879e581095f6c606e https://git.kernel.org/stable/c/b22d9a5698abf04341f8fbc30141e0673863c3a6 https://git.kernel.org/stable/c/c226964ec786f3797ed389a16392ce4357697d24 •