CVE-2021-47191 — scsi: scsi_debug: Fix out-of-bound read in resp_readcap16()

Affected: Linux

In the Linux kernel, the following vulnerability has been resolved:

scsi: scsi_debug: Fix out-of-bound read in resp_readcap16()

The following warning was observed running syzkaller:

[ 3813.830724] sg_write: data in/out 65466/242 bytes for SCSI command 0x9e-- guessing data in; [ 3813.830724] program syz-executor not setting count and/or reply_len properly [ 3813.836956] ================================================================== [ 3813.839465] BUG: KASAN: stack-out-of-bounds in sg_copy_buffer+0x157/0x1e0 [ 3813.841773] Read of size 4096 at addr ffff8883cf80f540 by task syz-executor/1549 [ 3813.846612] Call Trace: [ 3813.846995] dump_stack+0x108/0x15f [ 3813.847524] print_address_description+0xa5/0x372 [ 3813.848243] kasan_report.cold+0x236/0x2a8 [ 3813.849439] check_memory_region+0x240/0x270 [ 3813.850094] memcpy+0x30/0x80 [ 3813.850553] sg_copy_buffer+0x157/0x1e0 [ 3813.853032] sg_copy_from_buffer+0x13/0x20 [ 3813.853660] fill_from_dev_buffer+0x135/0x370 [ 3813.854329] resp_readcap16+0x1ac/0x280 [ 3813.856917] schedule_resp+0x41f/0x1630 [ 3813.858203] scsi_debug_queuecommand+0xb32/0x17e0 [ 3813.862699] scsi_dispatch_cmd+0x330/0x950 [ 3813.863329] scsi_request_fn+0xd8e/0x1710 [ 3813.863946] __blk_run_queue+0x10b/0x230 [ 3813.864544] blk_execute_rq_nowait+0x1d8/0x400 [ 3813.865220] sg_common_write.isra.0+0xe61/0x2420 [ 3813.871637] sg_write+0x6c8/0xef0 [ 3813.878853] __vfs_write+0xe4/0x800 [ 3813.883487] vfs_write+0x17b/0x530 [ 3813.884008] ksy…

USN-7496-1 — linux, linux-aws, linux-aws-hwe, linux-gcp, linux-gcp-4.15, linux-hwe, linux-kvm, linux-oracle vulnerabilities

Affected: Ubuntu:Pro:16.04:LTS: linux-aws-hwe, Ubuntu:Pro:16.04:LTS: linux-gcp, Ubuntu:Pro:16.04:LTS: linux-hwe, Ubuntu:Pro:16.04:LTS: linux-oracle, Ubuntu:Pro:18.04:LTS: linux, Ubuntu:Pro:18.04:LTS: linux-aws, Ubuntu:Pro:18.04:LTS: linux-gcp-4.15, Ubuntu:Pro:18.04:LTS: linux-kvm, Ubuntu:Pro:18.04:LTS: linux-oracle

Several security issues were discovered in the Linux kernel. An attacker could possibly use these to compromise the system. This update corrects flaws in the following subsystems: - Block layer subsystem; - Character device driver; - Hardware crypto device drivers; - GPU drivers; - Media drivers; - Network drivers; - SCSI subsystem; - USB Gadget drivers; - Framebuffer layer; - Ceph distributed file system; - File systems infrastructure; - JFS file system; - Network file system (NFS) client; - NILFS2 file system; - SMB network file system; - Netfilter; - CAN network layer; - IPv6 networking; - MAC80211 subsystem; - Netlink; - Network traffic control; - SCTP protocol; - TIPC protocol; (CVE-2024-53173, CVE-2024-26689, CVE-2024-46771, CVE-2024-36934, CVE-2023-52458, CVE-2021-47191, CVE-2024-50296, CVE-2024-26974, CVE-2021-47150, CVE-2024-53140, CVE-2025-21971, CVE-2024-50237, CVE-2024-46780, CVE-2023-52741, CVE-2024-56642, CVE-2024-56631, CVE-2024-53063, CVE-2024-36015, CVE-2021-47163, CVE-2024-56651, CVE-2024-49925, CVE-2023-52664, CVE-2021-47219, CVE-2024-50256, CVE-2024-53066, CVE-2024-49944, CVE-2024-56598, CVE-2024-56650, CVE-2024-26996, CVE-2024-35864, CVE-2024-56770, CVE-2024-26915, CVE-2023-52927)

Most recent entries from all

CVE-2021-47191 — scsi: scsi_debug: Fix out-of-bound read in resp_readcap16()

USN-7496-1 — linux, linux-aws, linux-aws-hwe, linux-gcp, linux-gcp-4.15, linux-hwe, linux-kvm, linux-oracle vulnerabilities