CVSS: -EPSS: 0%CPEs: 2EXPL: 0CVE-2024-42317 – mm/huge_memory: avoid PMD-size page cache if needed
https://notcve.org/view.php?id=CVE-2024-42317
In the Linux kernel, the following vulnerability has been resolved: mm/huge_memory: avoid PMD-size page cache if needed xarray can't support arbitrary page cache size. the largest and supported page cache size is defined as MAX_PAGECACHE_ORDER by commit 099d90642a71 ("mm/filemap: make MAX_PAGECACHE_ORDER acceptable to xarray"). However, it's possible to have 512MB page cache in the huge memory's collapsing path on ARM64 system whose base page size is 64KB. 512MB page cache is breaking the limitation and a warning is raised when the xarray entry is split as shown in the following example. [root@dhcp-10-26-1-207 ~]# cat /proc/1/smaps | grep KernelPageSize KernelPageSize: 64 kB [root@dhcp-10-26-1-207 ~]# cat /tmp/test.c : int main(int argc, char **argv) { const char *filename = TEST_XFS_FILENAME; int fd = 0; void *buf = (void *)-1, *p; int pgsize = getpagesize(); int ret = 0; if (pgsize != 0x10000) { fprintf(stdout, "System with 64KB base page size is required!\n"); return -EPERM; } system("echo 0 > /sys/devices/virtual/bdi/253:0/read_ahead_kb"); system("echo 1 > /proc/sys/vm/drop_caches"); /* Open the xfs file */ fd = open(filename, O_RDONLY); assert(fd > 0); /* Create VMA */ buf = mmap(NULL, TEST_MEM_SIZE, PROT_READ, MAP_SHARED, fd, 0); assert(buf ! • https://git.kernel.org/stable/c/6b24ca4a1a8d4ee3221d6d44ddbb99f542e4bda3 https://git.kernel.org/stable/c/e60f62f75c99740a28e2bf7e6044086033012a16 https://git.kernel.org/stable/c/d659b715e94ac039803d7601505d3473393fc0be •
CVSS: -EPSS: 0%CPEs: 5EXPL: 0CVE-2024-42315 – exfat: fix potential deadlock on __exfat_get_dentry_set
https://notcve.org/view.php?id=CVE-2024-42315
In the Linux kernel, the following vulnerability has been resolved: exfat: fix potential deadlock on __exfat_get_dentry_set When accessing a file with more entries than ES_MAX_ENTRY_NUM, the bh-array is allocated in __exfat_get_entry_set. The problem is that the bh-array is allocated with GFP_KERNEL. It does not make sense. In the following cases, a deadlock for sbi->s_lock between the two processes may occur. CPU0 CPU1 ---- ---- kswapd balance_pgdat lock(fs_reclaim) exfat_iterate lock(&sbi->s_lock) exfat_readdir exfat_get_uniname_from_ext_entry exfat_get_dentry_set __exfat_get_dentry_set kmalloc_array ... lock(fs_reclaim) ... evict exfat_evict_inode lock(&sbi->s_lock) To fix this, let's allocate bh-array with GFP_NOFS. • https://git.kernel.org/stable/c/a3ff29a95fde16906304455aa8c0bd84eb770258 https://git.kernel.org/stable/c/bd3bdb9e0d656f760b11d0c638d35d7f7068144d https://git.kernel.org/stable/c/92dcd7d6c6068bf4fd35a6f64d606e27d634807e https://git.kernel.org/stable/c/a7ac198f8dba791e3144c4da48a5a9b95773ee4b https://git.kernel.org/stable/c/1d1970493c289e3f44b9ec847ed26a5dbdf56a62 https://git.kernel.org/stable/c/89fc548767a2155231128cb98726d6d2ea1256c9 •
CVSS: -EPSS: 0%CPEs: 4EXPL: 0CVE-2024-42314 – btrfs: fix extent map use-after-free when adding pages to compressed bio
https://notcve.org/view.php?id=CVE-2024-42314
In the Linux kernel, the following vulnerability has been resolved: btrfs: fix extent map use-after-free when adding pages to compressed bio At add_ra_bio_pages() we are accessing the extent map to calculate 'add_size' after we dropped our reference on the extent map, resulting in a use-after-free. Fix this by computing 'add_size' before dropping our extent map reference. • https://git.kernel.org/stable/c/6a4049102055250256623ab1875fabd89004bff8 https://git.kernel.org/stable/c/c1cc3326e27b0bd7a2806b40bc48e49afaf951e7 https://git.kernel.org/stable/c/c205565e0f2f439f278a4a94ee97b67ef7b56ae8 https://git.kernel.org/stable/c/b7859ff398b6b656e1689daa860eb34837b4bb89 https://git.kernel.org/stable/c/8e7860543a94784d744c7ce34b78a2e11beefa5c •
CVSS: -EPSS: 0%CPEs: 8EXPL: 0CVE-2024-42313 – media: venus: fix use after free in vdec_close
https://notcve.org/view.php?id=CVE-2024-42313
In the Linux kernel, the following vulnerability has been resolved: media: venus: fix use after free in vdec_close There appears to be a possible use after free with vdec_close(). The firmware will add buffer release work to the work queue through HFI callbacks as a normal part of decoding. Randomly closing the decoder device from userspace during normal decoding can incur a read after free for inst. Fix it by cancelling the work in vdec_close. • https://git.kernel.org/stable/c/af2c3834c8ca7cc65d15592ac671933df8848115 https://git.kernel.org/stable/c/ad8cf035baf29467158e0550c7a42b7bb43d1db6 https://git.kernel.org/stable/c/72aff311194c8ceda934f24fd6f250b8827d7567 https://git.kernel.org/stable/c/4c9d235630d35db762b85a4149bbb0be9d504c36 https://git.kernel.org/stable/c/f8e9a63b982a8345470c225679af4ba86e4a7282 https://git.kernel.org/stable/c/da55685247f409bf7f976cc66ba2104df75d8dad https://git.kernel.org/stable/c/66fa52edd32cdbb675f0803b3c4da10ea19b6635 https://git.kernel.org/stable/c/6a96041659e834dc0b172dda4b2df512d •
CVSS: -EPSS: 0%CPEs: 11EXPL: 0CVE-2024-42312 – sysctl: always initialize i_uid/i_gid
https://notcve.org/view.php?id=CVE-2024-42312
In the Linux kernel, the following vulnerability has been resolved: sysctl: always initialize i_uid/i_gid Always initialize i_uid/i_gid inside the sysfs core so set_ownership() can safely skip setting them. Commit 5ec27ec735ba ("fs/proc/proc_sysctl.c: fix the default values of i_uid/i_gid on /proc/sys inodes.") added defaults for i_uid/i_gid when set_ownership() was not implemented. It also missed adjusting net_ctl_set_ownership() to use the same default values in case the computation of a better value failed. • https://git.kernel.org/stable/c/5ec27ec735ba0477d48c80561cc5e856f0c5dfaf https://git.kernel.org/stable/c/e83234d7ef237931148b4b17834dadf57eb46c12 https://git.kernel.org/stable/c/2cbf2af144f0cd08a3361c6299b2e6086b7d21d9 https://git.kernel.org/stable/c/2c7b50c7b1d036f71acd9a917a8cb0f9b6e43dab https://git.kernel.org/stable/c/7eb45a94c279dd5af4cafaa738ae93737517eef4 https://git.kernel.org/stable/c/14cc90952cef94bfa89a6b4a2f55fd9a70f50a16 https://git.kernel.org/stable/c/b2591c89a6e2858796111138c38fcb6851aa1955 https://git.kernel.org/stable/c/34a86adea1f2b3c3f9d864c8cce09dca6 •