nvme: remove stale namespaces by NSID range during scan
- 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- Where the record stands: published, rejected by its publisher, or superseded by another id.What do these mean?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 6.6.160, 6.12.111, 6.18.53, 7.2.7
- 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
Summary
In the Linux kernel, the following vulnerability has been resolved: nvme: remove stale namespaces by NSID range during scan nvme_scan_ns_list() drops the stale namespaces in each gap in the reported NSID list one NSID at a time. Every iteration calls nvme_find_get_ns() to look the namespace up and removes it if it is present. The loop runs once per NSID in the gap rather than once per namespace actually present. NSIDs are 32-bit, so a target with a sparse NSID space can make a single gap spin the loop billions of times with nothing to remove. watchdog: BUG: soft lockup - CPU#4 stuck for 26s! Workqueue: nvme-wq nvme_scan_work [nvme_core] RIP: 0010:__srcu_read_unlock+0xb/0x20 Call Trace: nvme_find_get_ns+0x7d/0xb0 [nvme_core] nvme_scan_ns_list+0xe8/0x280 [nvme_core] nvme_scan_work+0x18a/0x280 [nvme_core] process_one_work+0x197/0x380 worker_thread+0x2fe/0x410 kthread+0xe0/0x100 Rename nvme_remove_invalid_namespaces() to nvme_remove_nsid_range() and give it an open (start, end) NSID range. ctrl->namespaces is sorted by NSID, so the whole gap is dropped in a single walk that stops once end is reached. This bounds the work by the namespaces that are present instead of by the size of the gap.
Timeline
- CVE published
- Record last updated
Affected versions
- Linux Linux
From 540c801c65eb58e05e0ca38b6fd644a83d7e2b33 · fixed in e6a94b2c4c80a38002346ce915a9b9a3d478a3e6; From 540c801c65eb58e05e0ca38b6fd644a83d7e2b33 · fixed in c84ad7407fb16b92d9b7a649cc304a9cf3757897; From 540c801c65eb58e05e0ca38b6fd644a83d7e2b33 · fixed in f56b2bb4b18b017b056c4c17c66b2c4c54bf6ee4; From 540c801c65eb58e05e0ca38b6fd644a83d7e2b33 · fixed in 52200fc41a79da430ccf7c126ed837535b087ea2; From 540c801c65eb58e05e0ca38b6fd644a83d7e2b33 · fixed in 4ed7f3d7d435bf5b63da2814dc9270f5ba896011
- Linux Linux
4.5
- KernelLinux
From 4.5.0 · fixed in 6.6.160; From 6.7.0 · fixed in 6.12.111; From 6.13.0 · fixed in 6.18.53; From 6.19.0 · fixed in 7.2.7