CVSS: -EPSS: 0%CPEs: 8EXPL: 0CVE-2024-50278 – dm cache: fix potential out-of-bounds access on the first resume
https://notcve.org/view.php?id=CVE-2024-50278
In the Linux kernel, the following vulnerability has been resolved: dm cache: fix potential out-of-bounds access on the first resume Out-of-bounds access occurs if the fast device is expanded unexpectedly before the first-time resume of the cache table. This happens because expanding the fast device requires reloading the cache table for cache_create to allocate new in-core data structures that fit the new size, and the check in cache_preresume is not performed during the first resume, leading to the issue. Reproduce steps: 1. prepare component devices: dmsetup create cmeta --table "0 8192 linear /dev/sdc 0" dmsetup create cdata --table "0 65536 linear /dev/sdc 8192" dmsetup create corig --table "0 524288 linear /dev/sdc 262144" dd if=/dev/zero of=/dev/mapper/cmeta bs=4k count=1 oflag=direct 2. load a cache table of 512 cache blocks, and deliberately expand the fast device before resuming the cache, making the in-core data structures inadequate. dmsetup create cache --notable dmsetup reload cache --table "0 524288 cache /dev/mapper/cmeta \ /dev/mapper/cdata /dev/mapper/corig 128 2 metadata2 writethrough smq 0" dmsetup reload cdata --table "0 131072 linear /dev/sdc 8192" dmsetup resume cdata dmsetup resume cache 3. suspend the cache to write out the in-core dirty bitset and hint array, leading to out-of-bounds access to the dirty bitset at offset 0x40: dmsetup suspend cache KASAN reports: BUG: KASAN: vmalloc-out-of-bounds in is_dirty_callback+0x2b/0x80 Read of size 8 at addr ffffc90000085040 by task dmsetup/90 (...snip...) The buggy address belongs to the virtual mapping at [ffffc90000085000, ffffc90000087000) created by: cache_ctr+0x176a/0x35f0 (...snip...) Memory state around the buggy address: ffffc90000084f00: f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 ffffc90000084f80: f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 >ffffc90000085000: 00 00 00 00 00 00 00 00 f8 f8 f8 f8 f8 f8 f8 f8 ^ ffffc90000085080: f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 ffffc90000085100: f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 Fix by checking the size change on the first resume. • https://git.kernel.org/stable/c/f494a9c6b1b6dd9a9f21bbb75d9210d478eeb498 https://git.kernel.org/stable/c/e492f71854ce03474d49e87fd98b8df1f7cd1d2d https://git.kernel.org/stable/c/2222b0929d00e2d13732b799b63be391b5de4492 https://git.kernel.org/stable/c/483b7261b35a9d369082ab298a6670912243f0be https://git.kernel.org/stable/c/fdef3b94dfebd57e3077a578b6e309a2bb6fa688 https://git.kernel.org/stable/c/c52ec00cb2f9bebfada22edcc0db385b910a1cdb https://git.kernel.org/stable/c/036dd6e3d2638103e0092864577ea1d091466b86 https://git.kernel.org/stable/c/13ed3624c6ef283acefa4cc42cc8ae54f •
CVSS: -EPSS: 0%CPEs: 2EXPL: 0CVE-2024-50277 – dm: fix a crash if blk_alloc_disk fails
https://notcve.org/view.php?id=CVE-2024-50277
In the Linux kernel, the following vulnerability has been resolved: dm: fix a crash if blk_alloc_disk fails If blk_alloc_disk fails, the variable md->disk is set to an error value. cleanup_mapped_device will see that md->disk is non-NULL and it will attempt to access it, causing a crash on this statement "md->disk->private_data = NULL;". • https://git.kernel.org/stable/c/d7aec2a06730b774a97caaf48cbbc58330a85829 https://git.kernel.org/stable/c/fed13a5478680614ba97fc87e71f16e2e197912e •
CVSS: -EPSS: 0%CPEs: 7EXPL: 0CVE-2024-50272 – filemap: Fix bounds checking in filemap_read()
https://notcve.org/view.php?id=CVE-2024-50272
In the Linux kernel, the following vulnerability has been resolved: filemap: Fix bounds checking in filemap_read() If the caller supplies an iocb->ki_pos value that is close to the filesystem upper limit, and an iterator with a count that causes us to overflow that limit, then filemap_read() enters an infinite loop. This behaviour was discovered when testing xfstests generic/525 with the "localio" optimisation for loopback NFS mounts. • https://git.kernel.org/stable/c/c2a9737f45e27d8263ff9643f994bda9bac0b944 https://git.kernel.org/stable/c/272830350bb1bb5bb39395966ea63b9864b135d1 https://git.kernel.org/stable/c/fbc7b803831e5c8a42c1f3427a17e55a814d6b3c https://git.kernel.org/stable/c/3d549dcfbbb0ecdaa571431a27ee5da9f2466716 https://git.kernel.org/stable/c/26530b757c81f1389fb33ae0357500150933161b https://git.kernel.org/stable/c/a2746ab3bbc9c6408da5cd072653ec8c24749235 https://git.kernel.org/stable/c/6450e73f4c86d481ac2e22e1bc848d346e140826 https://git.kernel.org/stable/c/ace149e0830c380ddfce7e466fe860ca5 •
CVSS: 7.8EPSS: 0%CPEs: 8EXPL: 0CVE-2024-50267 – USB: serial: io_edgeport: fix use after free in debug printk
https://notcve.org/view.php?id=CVE-2024-50267
In the Linux kernel, the following vulnerability has been resolved: USB: serial: io_edgeport: fix use after free in debug printk The "dev_dbg(&urb->dev->dev, ..." which happens after usb_free_urb(urb) is a use after free of the "urb" pointer. Store the "dev" pointer at the start of the function to avoid this issue. • https://git.kernel.org/stable/c/984f68683298ba53af32f909de1f9452fbb37ccb https://git.kernel.org/stable/c/e6ceb04eeb6115d872d4c4078d12f1170ed755ce https://git.kernel.org/stable/c/39709ce93f5c3f9eb535efe2afea088805d1128f https://git.kernel.org/stable/c/e567fc8f7a4460e486e52c9261b1e8b9f5dc42aa https://git.kernel.org/stable/c/44fff2c16c5aafbdb70c7183dae0a415ae74705e https://git.kernel.org/stable/c/275258c30bbda29467216e96fb655b16bcc9992b https://git.kernel.org/stable/c/13d6ff3ca76056d06a9d88300be2a293442ff595 https://git.kernel.org/stable/c/314bdf446053e123f37543aa535197ee7 • CWE-416: Use After Free •
CVSS: -EPSS: 0%CPEs: 8EXPL: 0CVE-2024-50265 – ocfs2: remove entry once instead of null-ptr-dereference in ocfs2_xa_remove()
https://notcve.org/view.php?id=CVE-2024-50265
In the Linux kernel, the following vulnerability has been resolved: ocfs2: remove entry once instead of null-ptr-dereference in ocfs2_xa_remove() Syzkaller is able to provoke null-ptr-dereference in ocfs2_xa_remove(): [ 57.319872] (a.out,1161,7):ocfs2_xa_remove:2028 ERROR: status = -12 [ 57.320420] (a.out,1161,7):ocfs2_xa_cleanup_value_truncate:1999 ERROR: Partial truncate while removing xattr overlay.upper. Leaking 1 clusters and removing the entry [ 57.321727] BUG: kernel NULL pointer dereference, address: 0000000000000004 [...] [ 57.325727] RIP: 0010:ocfs2_xa_block_wipe_namevalue+0x2a/0xc0 [...] [ 57.331328] Call Trace: [ 57.331477] <TASK> [...] [ 57.333511] ? do_user_addr_fault+0x3e5/0x740 [ 57.333778] ? exc_page_fault+0x70/0x170 [ 57.334016] ? asm_exc_page_fault+0x2b/0x30 [ 57.334263] ? • https://git.kernel.org/stable/c/399ff3a748cf4c8c853e96dd477153202636527b https://git.kernel.org/stable/c/38cbf13b2e7a31362babe411f7c2c3c52cd2734b https://git.kernel.org/stable/c/168a9b8303fcb0317db4c06b23ce1c0ce2af4e10 https://git.kernel.org/stable/c/6a7e6dcf90fe7721d0863067b6ca9a9442134692 https://git.kernel.org/stable/c/dcc8fe8c83145041cb6c80cac21f6173a3ff0204 https://git.kernel.org/stable/c/86dd0e8d42828923c68ad506933336bcd6f2317d https://git.kernel.org/stable/c/dd73c942eed76a014c7a5597e6926435274d2c4c https://git.kernel.org/stable/c/2b5369528ee63c88371816178a05b5e66 •