CVE-2024-47668
lib/generic-radix-tree.c: Fix rare race in __genradix_ptr_alloc()
- 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- Where the record stands: published, rejected by its publisher, or superseded by another id.What do these mean?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
CISA's decision points: whether it is exploited, whether attacks can be automated, and how much control an attacker gets. Assessed (SSVC 2.0.3).What do these mean? →
- Exploitation: none
- Automatable: no
- Technical impact: partial
Summary
In the Linux kernel, the following vulnerability has been resolved: lib/generic-radix-tree.c: Fix rare race in __genradix_ptr_alloc() If we need to increase the tree depth, allocate a new node, and then race with another thread that increased the tree depth before us, we'll still have a preallocated node that might be used later. If we then use that node for a new non-root node, it'll still have a pointer to the old root instead of being zeroed - fix this by zeroing it in the cmpxchg failure path.
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
5.1
References 7
git.kernel.org
- stable/c/0f27f4f445390cb7f73d4209cb2bf32834dc53da
- stable/c/99418ec776a39609f50934720419e0b464ca2283
- stable/c/ad5ee9feebc2eb8cfc76ed74a2d6e55343b0e169
- stable/c/ebeff038744c498a036e7a92eb8e433ae0a386d7
- stable/c/d942e855324a60107025c116245095632476613e
- stable/c/0f078f8ca93b28a34e20bd050f12cd4efeee7c0f
- stable/c/b2f11c6f3e1fc60742673b8675c95b78447f3dae