CVE-2024-26638 Affecting kernel-debug-modules package, versions <0:4.18.0-553.22.1.el8_10
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-ORACLE8-KERNELDEBUGMODULES-8101934
- published27 Sept 2024
- disclosed18 Mar 2024
Introduced: 18 Mar 2024
CVE-2024-26638 (opens in a new tab)How to fix?
Upgrade Oracle:8 kernel-debug-modules to version 0:4.18.0-553.22.1.el8_10 or higher.
This issue was patched in ELSA-2024-7000.
NVD Description
Note: Versions mentioned in the description apply only to the upstream kernel-debug-modules package and not the kernel-debug-modules package as distributed by Oracle.
See How to fix? for Oracle:8 relevant fixed versions and status.
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
References
- https://linux.oracle.com/cve/CVE-2024-26638.html
- https://linux.oracle.com/errata/ELSA-2024-7000.html
- https://git.kernel.org/stable/c/1960f2b534da1e6c65fb96f9e98bda773495f406
- https://git.kernel.org/stable/c/78fbb92af27d0982634116c7a31065f24d092826
- https://git.kernel.org/stable/c/b0028f333420a65a53a63978522db680b37379dd
- https://git.kernel.org/stable/c/d9c54763e5cdbbd3f81868597fe8aca3c96e6387