CVSS: 5.5EPSS: 0%CPEs: 8EXPL: 0CVE-2024-26840 – cachefiles: fix memory leak in cachefiles_add_cache()
https://notcve.org/view.php?id=CVE-2024-26840
In the Linux kernel, the following vulnerability has been resolved: cachefiles: fix memory leak in cachefiles_add_cache() The following memory leak was reported after unbinding /dev/cachefiles: ================================================================== unreferenced object 0xffff9b674176e3c0 (size 192): comm "cachefilesd2", pid 680, jiffies 4294881224 hex dump (first 32 bytes): 01 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ backtrace (crc ea38a44b): [<ffffffff8eb8a1a5>] kmem_cache_alloc+0x2d5/0x370 [<ffffffff8e917f86>] prepare_creds+0x26/0x2e0 [<ffffffffc002eeef>] cachefiles_determine_cache_security+0x1f/0x120 [<ffffffffc00243ec>] cachefiles_add_cache+0x13c/0x3a0 [<ffffffffc0025216>] cachefiles_daemon_write+0x146/0x1c0 [<ffffffff8ebc4a3b>] vfs_write+0xcb/0x520 [<ffffffff8ebc5069>] ksys_write+0x69/0xf0 [<ffffffff8f6d4662>] do_syscall_64+0x72/0x140 [<ffffffff8f8000aa>] entry_SYSCALL_64_after_hwframe+0x6e/0x76 ================================================================== Put the reference count of cache_cred in cachefiles_daemon_unbind() to fix the problem. And also put cache_cred in cachefiles_add_cache() error branch to avoid memory leaks. En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: cachefiles: corrige la pérdida de memoria en cachefiles_add_cache() Se informó la siguiente pérdida de memoria después de desvincular /dev/cachefiles: ================= ==================================================== objeto sin referencia 0xffff9b674176e3c0 (tamaño 192): comm "cachefilesd2", pid 680, jiffies 4294881224 volcado hexadecimal (primeros 32 bytes): 01 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ........ ........ 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ retroceso (crc ea38a44b): [ ] kmem_cache_alloc+0x2d5/0x370 [] prepare_creds+0x26/0x2e0 [] cachefiles_determine_cache_security+0x1f/0x120 [] cachefiles_add_cache+0x13c/0x 3a0 [] cachefiles_daemon_write+0x146/0x1c0 [ ] vfs_write+0xcb/0x520 [] ksys_write+0x69/0xf0 [] do_syscall_64+0x72/0x140 [] Entry_SYSCALL_64_after_hwframe+0x6e/0x76 =============== ==================================================== == Coloque el recuento de referencias de cache_cred en cachefiles_daemon_unbind() para solucionar el problema. Y también coloque cache_cred en la rama de error cachefiles_add_cache() para evitar pérdidas de memoria. • https://git.kernel.org/stable/c/9ae326a69004dea8af2dae4fde58de27db700a8d https://git.kernel.org/stable/c/cb5466783793e66272624cf71925ae1d1ba32083 https://git.kernel.org/stable/c/037d5a949b0455540ef9aab34c10ddf54b65d285 https://git.kernel.org/stable/c/43eccc5823732ba6daab2511ed32dfc545a666d8 https://git.kernel.org/stable/c/94965be37add0983672e48ecb33cdbda92b62579 https://git.kernel.org/stable/c/8b218e2f0a27a9f09428b1847b4580640b9d1e58 https://git.kernel.org/stable/c/38e921616320d159336b0ffadb09e9fb4945c7c3 https://git.kernel.org/stable/c/9cac69912052a4def571fedf1cb9bb4ec • CWE-402: Transmission of Private Resources into a New Sphere ('Resource Leak') •
CVSS: -EPSS: 0%CPEs: 8EXPL: 0CVE-2024-26825 – nfc: nci: free rx_data_reassembly skb on NCI device cleanup
https://notcve.org/view.php?id=CVE-2024-26825
In the Linux kernel, the following vulnerability has been resolved: nfc: nci: free rx_data_reassembly skb on NCI device cleanup rx_data_reassembly skb is stored during NCI data exchange for processing fragmented packets. It is dropped only when the last fragment is processed or when an NTF packet with NCI_OP_RF_DEACTIVATE_NTF opcode is received. However, the NCI device may be deallocated before that which leads to skb leak. As by design the rx_data_reassembly skb is bound to the NCI device and nothing prevents the device to be freed before the skb is processed in some way and cleaned, free it on the NCI device cleanup. Found by Linux Verification Center (linuxtesting.org) with Syzkaller. En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: nfc: nci: rx_data_reassembly skb gratuito en la limpieza del dispositivo NCI rx_data_reassembly skb se almacena durante el intercambio de datos NCI para procesar paquetes fragmentados. Se elimina solo cuando se procesa el último fragmento o cuando se recibe un paquete NTF con el código de operación NCI_OP_RF_DEACTIVATE_NTF. Sin embargo, el dispositivo NCI puede desasignarse antes de lo que provoca una fuga de skb. • https://git.kernel.org/stable/c/6a2968aaf50c7a22fced77a5e24aa636281efca8 https://git.kernel.org/stable/c/7e9a8498658b398bf11b8e388005fa54e40aed81 https://git.kernel.org/stable/c/71349abe3aba7fedcab5b3fcd7aa82371fb5ccbf https://git.kernel.org/stable/c/2f6d16f0520d6505241629ee2f5c131b547d5f9d https://git.kernel.org/stable/c/471c9ede8061357b43a116fa692e70d91941ac23 https://git.kernel.org/stable/c/5c0c5ffaed73cbae6c317374dc32ba6cacc60895 https://git.kernel.org/stable/c/16d3f507b0fa70453dc54550df093d6e9ac630c1 https://git.kernel.org/stable/c/a3d90fb5c23f29ba59c04005ae76c5228 •
CVSS: -EPSS: 0%CPEs: 6EXPL: 0CVE-2023-52642 – media: rc: bpf attach/detach requires write permission
https://notcve.org/view.php?id=CVE-2023-52642
In the Linux kernel, the following vulnerability has been resolved: media: rc: bpf attach/detach requires write permission Note that bpf attach/detach also requires CAP_NET_ADMIN. En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: medios: rc: bpf adjunto/detach requiere permiso de escritura. Tenga en cuenta que bpf adjunto/detach también requiere CAP_NET_ADMIN. • https://git.kernel.org/stable/c/93d8109bf182510629bbefc8cd45296d2393987f https://git.kernel.org/stable/c/d98210108e7b2ff64b332b0a3541c8ad6a0617b0 https://git.kernel.org/stable/c/9f6087851ec6dce5b15f694aeaf3e8ec8243224e https://git.kernel.org/stable/c/93136132d1b5792bf44151e3494ae3691cd738e8 https://git.kernel.org/stable/c/caf2da1d4562de4e35eedec0be2b7f1ee25d83be https://git.kernel.org/stable/c/6a9d552483d50953320b9d3b57abdee8d436f23f https://lists.debian.org/debian-lts-announce/2024/06/msg00017.html •
CVSS: -EPSS: 0%CPEs: 8EXPL: 1CVE-2024-26817 – amdkfd: use calloc instead of kzalloc to avoid integer overflow
https://notcve.org/view.php?id=CVE-2024-26817
In the Linux kernel, the following vulnerability has been resolved: amdkfd: use calloc instead of kzalloc to avoid integer overflow This uses calloc instead of doing the multiplication which might overflow. En el kernel de Linux se ha resuelto la siguiente vulnerabilidad: amdkfd: usa calloc en lugar de kzalloc para evitar el desbordamiento de enteros. Esto usa calloc en lugar de hacer la multiplicación que podría desbordarse. • https://github.com/MaherAzzouzi/CVE-2024-26817-amdkfd https://git.kernel.org/stable/c/e6721ea845fcb93a764a92bd40f1afc0d6c69751 https://git.kernel.org/stable/c/8b0564704255c6b3c6a7188e86939f754e1577c0 https://git.kernel.org/stable/c/fcbd99b3c73309107e3be71f20dff9414df64f91 https://git.kernel.org/stable/c/cbac7de1d9901521e78cdc34e15451df3611f2ad https://git.kernel.org/stable/c/e6768c6737f4c02cba193a3339f0cc2907f0b86a https://git.kernel.org/stable/c/315eb3c2df7e4cb18e3eacfa18a53a46f2bf0ef7 https://git.kernel.org/stable/c/0c33d11153949310d76631d8f4a4736519eacd3a http •
CVSS: -EPSS: 0%CPEs: 3EXPL: 0CVE-2021-47219 – scsi: scsi_debug: Fix out-of-bound read in resp_report_tgtpgs()
https://notcve.org/view.php?id=CVE-2021-47219
In the Linux kernel, the following vulnerability has been resolved: scsi: scsi_debug: Fix out-of-bound read in resp_report_tgtpgs() The following issue was observed running syzkaller: BUG: KASAN: slab-out-of-bounds in memcpy include/linux/string.h:377 [inline] BUG: KASAN: slab-out-of-bounds in sg_copy_buffer+0x150/0x1c0 lib/scatterlist.c:831 Read of size 2132 at addr ffff8880aea95dc8 by task syz-executor.0/9815 CPU: 0 PID: 9815 Comm: syz-executor.0 Not tainted 4.19.202-00874-gfc0fe04215a9 #2 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.10.2-1ubuntu1 04/01/2014 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0xe4/0x14a lib/dump_stack.c:118 print_address_description+0x73/0x280 mm/kasan/report.c:253 kasan_report_error mm/kasan/report.c:352 [inline] kasan_report+0x272/0x370 mm/kasan/report.c:410 memcpy+0x1f/0x50 mm/kasan/kasan.c:302 memcpy include/linux/string.h:377 [inline] sg_copy_buffer+0x150/0x1c0 lib/scatterlist.c:831 fill_from_dev_buffer+0x14f/0x340 drivers/scsi/scsi_debug.c:1021 resp_report_tgtpgs+0x5aa/0x770 drivers/scsi/scsi_debug.c:1772 schedule_resp+0x464/0x12f0 drivers/scsi/scsi_debug.c:4429 scsi_debug_queuecommand+0x467/0x1390 drivers/scsi/scsi_debug.c:5835 scsi_dispatch_cmd+0x3fc/0x9b0 drivers/scsi/scsi_lib.c:1896 scsi_request_fn+0x1042/0x1810 drivers/scsi/scsi_lib.c:2034 __blk_run_queue_uncond block/blk-core.c:464 [inline] __blk_run_queue+0x1a4/0x380 block/blk-core.c:484 blk_execute_rq_nowait+0x1c2/0x2d0 block/blk-exec.c:78 sg_common_write.isra.19+0xd74/0x1dc0 drivers/scsi/sg.c:847 sg_write.part.23+0x6e0/0xd00 drivers/scsi/sg.c:716 sg_write+0x64/0xa0 drivers/scsi/sg.c:622 __vfs_write+0xed/0x690 fs/read_write.c:485 kill_bdev:block_device:00000000e138492c vfs_write+0x184/0x4c0 fs/read_write.c:549 ksys_write+0x107/0x240 fs/read_write.c:599 do_syscall_64+0xc2/0x560 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe We get 'alen' from command its type is int. If userspace passes a large length we will get a negative 'alen'. Switch n, alen, and rlen to u32. • https://git.kernel.org/stable/c/8440377e1a5644779b4c8d013aa2a917f5fc83c3 https://git.kernel.org/stable/c/66523553fa62c7878fc5441dc4e82be71934eb77 https://git.kernel.org/stable/c/f347c26836c270199de1599c3cd466bb7747caa9 •