nvme-pci: fix a NULL pointer dereference in nvme_alloc_admin_tags
- 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- Where the record stands: published, rejected by its publisher, or superseded by another id.What do these mean?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
- 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: no
- Technical impact: partial
Summary
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.
Timeline
- CVE published
- CISA SSVC assessment
Exploitation: none · Automatable: no · Technical impact: partial
- Record last updated
Affected versions
- Linux Linux
Version range not reported
- Linux Linux
3.19
References 9
git.kernel.org
- stable/c/8321b17789f614414206af07e17ce4751c95dc76
- stable/c/9e649471b396fa0139d53919354ce1eace9b9a24
- stable/c/8da2b7bdb47e94bbc4062a3978c708926bcb022c
- stable/c/f76729662650cd7bc8f8194e057af381370349a7
- stable/c/af98940dd33c9f9e1beb4f71c0a39260100e2a65
- stable/c/906c81dba8ee8057523859b5e1a2479e9fd34860
- stable/c/7a28556082d1fbcbc599baf1c24252dfc73efefc
- stable/c/54a4c1e47d1b2585e74920399455bd9abbfb2bd7
- stable/c/da42761181627e9bdc37d18368b827948a583929