CVE-2024-26638— nbd: always initialize struct msghdr completely
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I. Basic Information for CVE-2024-26638
Vulnerability Information
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Vulnerability Title
nbd: always initialize struct msghdr completely
Source: NVD (National Vulnerability Database)
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: nbd: always initialize struct msghdr completely syzbot complains that msg->msg_get_inq value can be uninitialized [1] struct msghdr got many new fields recently, we should always make sure their values is zero by default. [1] BUG: KMSAN: uninit-value in tcp_recvmsg+0x686/0xac0 net/ipv4/tcp.c:2571 tcp_recvmsg+0x686/0xac0 net/ipv4/tcp.c:2571 inet_recvmsg+0x131/0x580 net/ipv4/af_inet.c:879 sock_recvmsg_nosec net/socket.c:1044 [inline] sock_recvmsg+0x12b/0x1e0 net/socket.c:1066 __sock_xmit+0x236/0x5c0 drivers/block/nbd.c:538 nbd_read_reply drivers/block/nbd.c:732 [inline] recv_work+0x262/0x3100 drivers/block/nbd.c:863 process_one_work kernel/workqueue.c:2627 [inline] process_scheduled_works+0x104e/0x1e70 kernel/workqueue.c:2700 worker_thread+0xf45/0x1490 kernel/workqueue.c:2781 kthread+0x3ed/0x540 kernel/kthread.c:388 ret_from_fork+0x66/0x80 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:242 Local variable msg created at: __sock_xmit+0x4c/0x5c0 drivers/block/nbd.c:513 nbd_read_reply drivers/block/nbd.c:732 [inline] recv_work+0x262/0x3100 drivers/block/nbd.c:863 CPU: 1 PID: 7465 Comm: kworker/u5:1 Not tainted 6.7.0-rc7-syzkaller-00041-gf016f7547aee #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/17/2023 Workqueue: nbd5-recv recv_work
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Title
Linux kernel 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Linux kernel是美国Linux基金会的开源操作系统Linux所使用的内核。 Linux kernel存在安全漏洞，该漏洞源于msg->msg_get_inq值未初始化。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
II. Public POCs for CVE-2024-26638
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Same Patch Batch · Linux · 2024-03-18 · 21 CVEs total
| CVE-2023-52616 | crypto: lib/mpi - Fix unexpected pointer access in mpi_ec_init | |
| CVE-2024-26641 | ip6_tunnel: make sure to pull inner header in __ip6_tnl_rcv() | |
| CVE-2024-26640 | tcp: add sanity checks to rx zerocopy | |
| CVE-2023-52619 | pstore/ram: Fix crash when setting number of cpus to an odd number | |
| CVE-2023-52618 | block/rnbd-srv: Check for unlikely string overflow | |
| CVE-2023-52617 | PCI: switchtec: Fix stdev_release() crash after surprise hot remove | |
| CVE-2024-26636 | llc: make llc_ui_sendmsg() more robust against bonding changes | |
| CVE-2024-26637 | wifi: ath11k: rely on mac80211 debugfs handling for vif | |
| CVE-2024-26635 | llc: Drop support for ETH_P_TR_802_2. | |
| CVE-2024-26634 | net: fix removing a namespace with conflicting altnames | |
| CVE-2023-52609 | binder: fix race between mmput() and do_exit() | |
| CVE-2023-52615 | hwrng: core - Fix page fault dead lock on mmap-ed hwrng | |
| CVE-2023-52614 | PM / devfreq: Fix buffer overflow in trans_stat_show | |
| CVE-2024-26633 | ip6_tunnel: fix NEXTHDR_FRAGMENT handling in ip6_tnl_parse_tlv_enc_lim() | |
| CVE-2024-26632 | block: Fix iterating over an empty bio with bio_for_each_folio_all | |
| CVE-2024-26631 | ipv6: mcast: fix data-race in ipv6_mc_down / mld_ifc_work | |
| CVE-2023-52613 | drivers/thermal/loongson2_thermal: Fix incorrect PTR_ERR() judgment | |
| CVE-2023-52612 | crypto: scomp - fix req->dst buffer overflow | |
| CVE-2023-52611 | wifi: rtw88: sdio: Honor the host max_req_size in the RX path | |
| CVE-2023-52610 | net/sched: act_ct: fix skb leak and crash on ooo frags |
IV. Related Vulnerabilities
Same product: Linux
- CVE-2026-43500
rxrpc: Also unshare DATA/RESPONSE packets when paged frags a - CVE-2026-43475
scsi: storvsc: Fix scheduling while atomic on PREEMPT_RT - CVE-2026-43474
fs: init flags_valid before calling vfs_fileattr_get - CVE-2026-43473
scsi: mpi3mr: Add NULL checks when resetting request and rep - CVE-2026-43472
unshare: fix unshare_fs() handling
Same vendor: Linux
- CVE-2026-43500
rxrpc: Also unshare DATA/RESPONSE packets when paged frags a - CVE-2026-43475
scsi: storvsc: Fix scheduling while atomic on PREEMPT_RT - CVE-2026-43474
fs: init flags_valid before calling vfs_fileattr_get - CVE-2026-43473
scsi: mpi3mr: Add NULL checks when resetting request and rep - CVE-2026-43472
unshare: fix unshare_fs() handling
V. Comments for CVE-2024-26638
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