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CVE-2022-49492

nvme-pci: fix a NULL pointer dereference in nvme_alloc_admin_tags PUBLISHED

Description (CNA)

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.

Affected (CNA)

Vendor / productVersions
Linux / Linuxaffected 35b489d32fcc37e8735f41aa794b24cf9d1e74f5 before 8321b17789f614414206af07e17ce4751c95dc76; affected 35b489d32fcc37e8735f41aa794b24cf9d1e74f5 before 9e649471b396fa0139d53919354ce1eace9b9a24; affected 35b489d32fcc37e8735f41aa794b24cf9d1e74f5 before 8da2b7bdb47e94bbc4062a3978c708926bcb022c; affected 35b489d32fcc37e8735f41aa794b24cf9d1e74f5 before f76729662650cd7bc8f8194e057af381370349a7; affected 35b489d32fcc37e8735f41aa794b24cf9d1e74f5 before af98940dd33c9f9e1beb4f71c0a39260100e2a65; affected 35b489d32fcc37e8735f41aa794b24cf9d1e74f5 before 906c81dba8ee8057523859b5e1a2479e9fd34860; affected 35b489d32fcc37e8735f41aa794b24cf9d1e74f5 before 7a28556082d1fbcbc599baf1c24252dfc73efefc; affected 35b489d32fcc37e8735f41aa794b24cf9d1e74f5 before 54a4c1e47d1b2585e74920399455bd9abbfb2bd7; affected 35b489d32fcc37e8735f41aa794b24cf9d1e74f5 before da42761181627e9bdc37d18368b827948a583929
Linux / Linuxaffected 3.19; unaffected 0 before 3.19; unaffected 4.9.318 through 4.9.*; unaffected 4.14.283 through 4.14.*; unaffected 4.19.247 through 4.19.*; unaffected 5.4.198 through 5.4.*; unaffected 5.10.121 through 5.10.*; unaffected 5.15.46 through 5.15.*; unaffected 5.17.14 through 5.17.*; unaffected 5.18.3 through 5.18.*; unaffected 5.19 through *

CWE

No CWE identifiers supplied.

References

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.