5.5

CVE-2022-49492

nvme-pci: fix a NULL pointer dereference in nvme_alloc_admin_tags

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

nvme-pci: fix a NULL pointer dereference in nvme_alloc_admin_tags

In nvme_alloc_admin_tags, the admin_q can be set to an error (typically
-ENOMEM) if the blk_mq_init_queue call fails to set up the queue, which
is checked immediately after the call. However, when we return the error
message up the stack, to nvme_reset_work the error takes us to
nvme_remove_dead_ctrl()
  nvme_dev_disable()
   nvme_suspend_queue(&dev->queues[0]).

Here, we only check that the admin_q is non-NULL, rather than not
an error or NULL, and begin quiescing a queue that never existed, leading
to bad / NULL pointer dereference.
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Linux ≫ Linux Kernel Version < 4.9.318
Linux ≫ Linux Kernel Version >= 4.10 < 4.14.283
Linux ≫ Linux Kernel Version >= 4.15 < 4.19.247
Linux ≫ Linux Kernel Version >= 4.20 < 5.4.198
Linux ≫ Linux Kernel Version >= 5.5 < 5.10.121
Linux ≫ Linux Kernel Version >= 5.11 < 5.15.46
Linux ≫ Linux Kernel Version >= 5.16 < 5.17.14
Linux ≫ Linux Kernel Version >= 5.18 < 5.18.3
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Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.29% 0.203
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
nvd@nist.gov 5.5 1.8 3.6
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
134c704f-9b21-4f2e-91b3-4a467353bcc0 5.5 1.8 3.6
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CWE-476 NULL Pointer Dereference

The product dereferences a pointer that it expects to be valid but is NULL.

https://git.kernel.org/stable/c/54a4c1e47d1b2585e74920399455bd9abbfb2bd7
Patch
https://git.kernel.org/stable/c/7a28556082d1fbcbc599baf1c24252dfc73efefc
Patch
https://git.kernel.org/stable/c/8321b17789f614414206af07e17ce4751c95dc76
Patch
https://git.kernel.org/stable/c/8da2b7bdb47e94bbc4062a3978c708926bcb022c
Patch
https://git.kernel.org/stable/c/906c81dba8ee8057523859b5e1a2479e9fd34860
Patch
https://git.kernel.org/stable/c/9e649471b396fa0139d53919354ce1eace9b9a24
Patch
https://git.kernel.org/stable/c/af98940dd33c9f9e1beb4f71c0a39260100e2a65
Patch
https://git.kernel.org/stable/c/da42761181627e9bdc37d18368b827948a583929
Patch
https://git.kernel.org/stable/c/f76729662650cd7bc8f8194e057af381370349a7
Patch