CVSS: -EPSS: 0%CPEs: 8EXPL: 0CVE-2024-50282 – drm/amdgpu: add missing size check in amdgpu_debugfs_gprwave_read()
https://notcve.org/view.php?id=CVE-2024-50282
In the Linux kernel, the following vulnerability has been resolved: drm/amdgpu: add missing size check in amdgpu_debugfs_gprwave_read() Avoid a possible buffer overflow if size is larger than 4K. (cherry picked from commit f5d873f5825b40d886d03bd2aede91d4cf002434) • https://git.kernel.org/stable/c/673bdb4200c092692f83b5f7ba3df57021d52d29 https://git.kernel.org/stable/c/7ccd781794d247589104a791caab491e21218fba https://git.kernel.org/stable/c/17f5f18085acb5e9d8d13d84a4e12bb3aff2bd64 https://git.kernel.org/stable/c/aaf6160a4b7f9ee3cd91aa5b3251f5dbe2170f42 https://git.kernel.org/stable/c/25d7e84343e1235b667cf5226c3934fdf36f0df6 https://git.kernel.org/stable/c/8906728f2fbd6504cb488f4afdd66af28f330a7a https://git.kernel.org/stable/c/2faaee36e6e30f9efc7fa6bcb0bdcbe05c23f51f https://git.kernel.org/stable/c/4d75b9468021c73108b4439794d69e892 •
CVSS: -EPSS: 0%CPEs: 11EXPL: 0CVE-2024-50280 – dm cache: fix flushing uninitialized delayed_work on cache_ctr error
https://notcve.org/view.php?id=CVE-2024-50280
In the Linux kernel, the following vulnerability has been resolved: dm cache: fix flushing uninitialized delayed_work on cache_ctr error An unexpected WARN_ON from flush_work() may occur when cache creation fails, caused by destroying the uninitialized delayed_work waker in the error path of cache_create(). For example, the warning appears on the superblock checksum error. Reproduce steps: 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/urandom of=/dev/mapper/cmeta bs=4k count=1 oflag=direct dmsetup create cache --table "0 524288 cache /dev/mapper/cmeta \ /dev/mapper/cdata /dev/mapper/corig 128 2 metadata2 writethrough smq 0" Kernel logs: (snip) WARNING: CPU: 0 PID: 84 at kernel/workqueue.c:4178 __flush_work+0x5d4/0x890 Fix by pulling out the cancel_delayed_work_sync() from the constructor's error path. This patch doesn't affect the use-after-free fix for concurrent dm_resume and dm_destroy (commit 6a459d8edbdb ("dm cache: Fix UAF in destroy()")) as cache_dtr is not changed. • https://git.kernel.org/stable/c/6a3e412c2ab131c54945327a7676b006f000a209 https://git.kernel.org/stable/c/6a459d8edbdbe7b24db42a5a9f21e6aa9e00c2aa https://git.kernel.org/stable/c/034cbc8d3b47a56acd89453c29632a9c117de09d https://git.kernel.org/stable/c/993406104d2b28fe470126a062ad37a1e21e792e https://git.kernel.org/stable/c/4d20032dd90664de09f2902a7ea49ae2f7771746 https://git.kernel.org/stable/c/2f097dfac7579fd84ff98eb1d3acd41d53a485f3 https://git.kernel.org/stable/c/2b17026685a270b2beaf1cdd9857fcedd3505c7e https://git.kernel.org/stable/c/d2a0b298ebf83ab6236f66788a3541e91 •
CVSS: -EPSS: 0%CPEs: 8EXPL: 0CVE-2024-50279 – dm cache: fix out-of-bounds access to the dirty bitset when resizing
https://notcve.org/view.php?id=CVE-2024-50279
In the Linux kernel, the following vulnerability has been resolved: dm cache: fix out-of-bounds access to the dirty bitset when resizing dm-cache checks the dirty bits of the cache blocks to be dropped when shrinking the fast device, but an index bug in bitset iteration causes out-of-bounds access. Reproduce steps: 1. create a cache device of 1024 cache blocks (128 bytes dirty bitset) dmsetup create cmeta --table "0 8192 linear /dev/sdc 0" dmsetup create cdata --table "0 131072 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 dmsetup create cache --table "0 524288 cache /dev/mapper/cmeta \ /dev/mapper/cdata /dev/mapper/corig 128 2 metadata2 writethrough smq 0" 2. shrink the fast device to 512 cache blocks, triggering out-of-bounds access to the dirty bitset (offset 0x80) dmsetup suspend cache dmsetup reload cdata --table "0 65536 linear /dev/sdc 8192" dmsetup resume cdata dmsetup resume cache KASAN reports: BUG: KASAN: vmalloc-out-of-bounds in cache_preresume+0x269/0x7b0 Read of size 8 at addr ffffc900000f3080 by task dmsetup/131 (...snip...) The buggy address belongs to the virtual mapping at [ffffc900000f3000, ffffc900000f5000) created by: cache_ctr+0x176a/0x35f0 (...snip...) Memory state around the buggy address: ffffc900000f2f80: f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 ffffc900000f3000: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 >ffffc900000f3080: f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 ^ ffffc900000f3100: f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 ffffc900000f3180: f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 Fix by making the index post-incremented. • https://git.kernel.org/stable/c/f494a9c6b1b6dd9a9f21bbb75d9210d478eeb498 https://git.kernel.org/stable/c/4fa4feb873cea0e9d6ff883b37cca6f33169d8b4 https://git.kernel.org/stable/c/8501e38dc9e0060814c4085815fc83da3e6d43bf https://git.kernel.org/stable/c/ee1f74925717ab36f6a091104c170639501ce818 https://git.kernel.org/stable/c/ff1dd8a04c30e8d4e2fd5c83198ca672eb6a9e7f https://git.kernel.org/stable/c/56507203e1b6127967ec2b51fb0b23a0d4af1334 https://git.kernel.org/stable/c/e57648ce325fa405fe6bbd0e6a618ced7c301a2d https://git.kernel.org/stable/c/3b02c40ff10fdf83cc545850db208de85 •
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 •