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CVE-2023-53558 is an improper locking flaw in the Linux kernel RCU Tasks callback-list initialization path. The cblist_init_generic() function invoked pr_info() while holding the rtp->cbs_gbl_lock spinlock. Because pr_info() reaches printk(), whose console-output path can acquire further locks and may sleep, this can attempt to sleep or wait in atomic context and trigger an invalid-wait-context kernel BUG. The fix moves the logging call outside the spinlock-protected critical section.
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What an attacker gets, and what they’ve been doing with it.
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No public exploit code observed for this vulnerability.
Products and vendors Mallory has correlated with this vulnerability. Open in Mallory to drill down to specific CPE configurations and version ranges.
Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.
2 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
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Every observed campaign linking this CVE to a named adversary.
Malware families riding this exploit, with evidence and IOCs.
YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.
Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.