net/smc: fix one NULL pointer dereference in smc_ib_is_sg_need_sync()
- Published
- Last modified
- Where the record stands: published, rejected by its publisher, or superseded by another id.What do these mean? →
- published
- Whether CISA lists it in its Known Exploited Vulnerabilities catalog: proof that attackers are using it.What do these mean? →
- Not listed in CISA KEV
- Fix
- Fixed in 6.1.151, 6.6.105, 6.12.46, 6.16.6
- Whether working attack code is public (Exploit-DB, Metasploit, Nuclei or GitHub). Public code makes attacks easier.What do these mean? →
- None on Exploit-DB, Metasploit or GitHub
- Exploitation: none
- Automatable: yes
- Technical impact: partial
Summary
In the Linux kernel, the following vulnerability has been resolved: net/smc: fix one NULL pointer dereference in smc_ib_is_sg_need_sync() BUG: kernel NULL pointer dereference, address: 00000000000002ec PGD 0 P4D 0 Oops: Oops: 0000 [#1] SMP PTI CPU: 28 UID: 0 PID: 343 Comm: kworker/28:1 Kdump: loaded Tainted: G OE 6.17.0-rc2+ #9 NONE Tainted: [O]=OOT_MODULE, [E]=UNSIGNED_MODULE Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.15.0-1 04/01/2014 Workqueue: smc_hs_wq smc_listen_work [smc] RIP: 0010:smc_ib_is_sg_need_sync+0x9e/0xd0 [smc] ... Call Trace: <TASK> smcr_buf_map_link+0x211/0x2a0 [smc] __smc_buf_create+0x522/0x970 [smc] smc_buf_create+0x3a/0x110 [smc] smc_find_rdma_v2_device_serv+0x18f/0x240 [smc] ? smc_vlan_by_tcpsk+0x7e/0xe0 [smc] smc_listen_find_device+0x1dd/0x2b0 [smc] smc_listen_work+0x30f/0x580 [smc] process_one_work+0x18c/0x340 worker_thread+0x242/0x360 kthread+0xe7/0x220 ret_from_fork+0x13a/0x160 ret_from_fork_asm+0x1a/0x30 </TASK> If the software RoCE device is used, ibdev->dma_device is a null pointer. As a result, the problem occurs. Null pointer detection is added to prevent problems.
Timeline
- CVE published
- CISA SSVC assessment
Exploitation: none · Automatable: yes · Technical impact: partial
- Record last updated
Affected versions
- Linux Linux
From 0ef69e788411cba2af017db731a9fc62d255e9ac · fixed in 0cdf1fd8fc59d44a48c694324611136910301ef9; From 0ef69e788411cba2af017db731a9fc62d255e9ac · fixed in f18d9b3abf9c6587372cc702f963a7592277ed56; From 0ef69e788411cba2af017db731a9fc62d255e9ac · fixed in eb929910bd4b4165920fa06a87b22cc6cae92e0e; From 0ef69e788411cba2af017db731a9fc62d255e9ac · fixed in 34f17cbe027050b8d5316ea1b6f9bd7c378e92de; From 0ef69e788411cba2af017db731a9fc62d255e9ac · fixed in ba1e9421cf1a8369d25c3832439702a015d6b5f9
- Linux Linux
6.0
- KernelLinux
From 6.0.0 · fixed in 6.1.151; From 6.2.0 · fixed in 6.6.105; From 6.7.0 · fixed in 6.12.46; From 6.13.0 · fixed in 6.16.6