CVE-2022-48751
- Source
- https://nvd.nist.gov/vuln/detail/CVE-2022-48751
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2022-48751.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2022-48751
- Downstream
- Related
- Published
- 2024-06-20T11:13:32Z
- Modified
- 2025-10-14T20:44:31.753671Z
- Summary
- net/smc: Transitional solution for clcsock race issue
- Details
-
In the Linux kernel, the following vulnerability has been resolved:
net/smc: Transitional solution for clcsock race issue
We encountered a crash in smc_setsockopt() and it is caused by accessing smc->clcsock after clcsock was released.
BUG: kernel NULL pointer dereference, address: 0000000000000020 #PF: supervisor read access in kernel mode #PF: errorcode(0x0000) - not-present page PGD 0 P4D 0 Oops: 0000 [#1] PREEMPT SMP PTI CPU: 1 PID: 50309 Comm: nginx Kdump: loaded Tainted: G E 5.16.0-rc4+ #53 RIP: 0010:smcsetsockopt+0x59/0x280 [smc] Call Trace: <TASK> _syssetsockopt+0xfc/0x190 _x64syssetsockopt+0x20/0x30 dosyscall64+0x34/0x90 entrySYSCALL64after_hwframe+0x44/0xae RIP: 0033:0x7f16ba83918e </TASK>
This patch tries to fix it by holding clcsockreleaselock and checking whether clcsock has already been released before access.
In case that a crash of the same reason happens in smcgetsockopt() or smcswitchtofallback(), this patch also checkes smc->clcsock in them too. And the caller of smcswitchto_fallback() will identify whether fallback succeeds according to the return value.
- References
Affected packages
Git / git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Affected ranges
- Type
- GIT
- Repo
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- Events
-
Introducedfd57770dd198f5b2ddd5b9e6bf282cf98d63adb9Fixed38f0bdd548fd2ef5d481b88d8a2bfef968452e34
- Type
- GIT
- Repo
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- Events
-
Introducedfd57770dd198f5b2ddd5b9e6bf282cf98d63adb9Fixed4284225cd8001e134f5cf533a7cd244bbb654d0f
- Type
- GIT
- Repo
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- Events
-
Introducedfd57770dd198f5b2ddd5b9e6bf282cf98d63adb9Fixedc0bf3d8a943b6f2e912b7c1de03e2ef28e76f760
- Type
- GIT
- Repo
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- Events
-
Introducedd1d004585b40c212b338fc8a40cbaaf230ea4703
Affected versions
v4.*
v4.19.299
v4.19.300
v4.19.301
v4.19.302
v4.19.303
v4.19.304
v4.19.305
v4.19.306
v4.19.307
v4.19.308
v4.19.309
v4.19.310
v4.19.311
v4.19.312
v4.19.313
v4.19.314
v4.19.315
v4.19.316
v4.19.317
v4.19.318
v4.19.319
v4.19.320
v4.19.321
v4.19.322
v4.19.323
v4.19.324
v4.19.325
v5.*
v5.1
v5.1-rc5
v5.1-rc6
v5.1-rc7
v5.10
v5.10-rc1
v5.10-rc2
v5.10-rc3
v5.10-rc4
v5.10-rc5
v5.10-rc6
v5.10-rc7
v5.11
v5.11-rc1
v5.11-rc2
v5.11-rc3
v5.11-rc4
v5.11-rc5
v5.11-rc6
v5.11-rc7
v5.12
v5.12-rc1
v5.12-rc1-dontuse
v5.12-rc2
v5.12-rc3
v5.12-rc4
v5.12-rc5
v5.12-rc6
v5.12-rc7
v5.12-rc8
v5.13
v5.13-rc1
v5.13-rc2
v5.13-rc3
v5.13-rc4
v5.13-rc5
v5.13-rc6
v5.13-rc7
v5.14
v5.14-rc1
v5.14-rc2
v5.14-rc3
v5.14-rc4
v5.14-rc5
v5.14-rc6
v5.14-rc7
v5.15
v5.15-rc1
v5.15-rc2
v5.15-rc3
v5.15-rc4
v5.15-rc5
v5.15-rc6
v5.15-rc7
v5.15.1
v5.15.10
v5.15.11
v5.15.12
v5.15.13
v5.15.14
v5.15.15
v5.15.16
v5.15.17
v5.15.18
v5.15.2
v5.15.3
v5.15.4
v5.15.5
v5.15.6
v5.15.7
v5.15.8
v5.15.9
v5.16
v5.16-rc1
v5.16-rc2
v5.16-rc3
v5.16-rc4
v5.16-rc5
v5.16-rc6
v5.16-rc7
v5.16-rc8
v5.16.1
v5.16.2
v5.16.3
v5.16.4
v5.2
v5.2-rc1
v5.2-rc2
v5.2-rc3
v5.2-rc4
v5.2-rc5
v5.2-rc6
v5.2-rc7
v5.3
v5.3-rc1
v5.3-rc2
v5.3-rc3
v5.3-rc4
v5.3-rc5
v5.3-rc6
v5.3-rc7
v5.3-rc8
v5.4
v5.4-rc1
v5.4-rc2
v5.4-rc3
v5.4-rc4
v5.4-rc5
v5.4-rc6
v5.4-rc7
v5.4-rc8
v5.5
v5.5-rc1
v5.5-rc2
v5.5-rc3
v5.5-rc4
v5.5-rc5
v5.5-rc6
v5.5-rc7
v5.6
v5.6-rc1
v5.6-rc2
v5.6-rc3
v5.6-rc4
v5.6-rc5
v5.6-rc6
v5.6-rc7
v5.7
v5.7-rc1
v5.7-rc2
v5.7-rc3
v5.7-rc4
v5.7-rc5
v5.7-rc6
v5.7-rc7
v5.8
v5.8-rc1
v5.8-rc2
v5.8-rc3
v5.8-rc4
v5.8-rc5
v5.8-rc6
v5.8-rc7
v5.9
v5.9-rc1
v5.9-rc2
v5.9-rc3
v5.9-rc4
v5.9-rc5
v5.9-rc6
v5.9-rc7
v5.9-rc8
Database specific
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