CVE-2026-53157
net: phonet: free phonet_device after RCU grace period
- 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- Where the record stands: published, rejected by its publisher, or superseded by another id.What do these mean?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
Summary
In the Linux kernel, the following vulnerability has been resolved: net: phonet: free phonet_device after RCU grace period phonet_device_destroy() removes a phonet_device from the per-net device list with list_del_rcu(), but frees it immediately. RCU readers walking the same list can still hold a pointer to the object after it has been removed, leading to a slab-use-after-free. Use kfree_rcu(), matching the lifetime rule already used by phonet_address_del() for the same object type.
Timeline
- CVE published
- Record last updated
Affected versions
- Linux Linux
Version range not reported
- Linux Linux
2.6.33
References 8
git.kernel.org
- stable/c/d59794337ea496042288c7c68356d9b9ca7f46a9
- stable/c/6cd7067d6e4b0b2033ba2f918ecbd54dc2af3763
- stable/c/2ec8011cce0cd0fc7a5068585d867fc08d508578
- stable/c/09c9b92c2010481160245244ea8fa1d06d5d4ae0
- stable/c/bd2ab4d800fc26814d89328d87b5f97ef6aa906a
- stable/c/52b8f5ef82c886f7cd24617915e4b1579ddfd001
- stable/c/bff309ea51f1395c1ef8be8b75ce62d28a319113
- stable/c/71de0177b28da751f407581a4515cf4d762f6296