CVE-2024-39494
ima: Fix use-after-free on a dentry's dname.name
- 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- Where the record stands: published, rejected by its publisher, or superseded by another id.What do these mean?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: ima: Fix use-after-free on a dentry's dname.name ->d_name.name can change on rename and the earlier value can be freed; there are conditions sufficient to stabilize it (->d_lock on dentry, ->d_lock on its parent, ->i_rwsem exclusive on the parent's inode, rename_lock), but none of those are met at any of the sites. Take a stable snapshot of the name instead.
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
3.7
References 7
git.kernel.org
- stable/c/480afcbeb7aaaa22677d3dd48ec590b441eaac1a
- stable/c/edf287bc610b18d7a9c0c0c1cb2e97b9348c71bb
- stable/c/0b31e28fbd773aefb6164687e0767319b8199829
- stable/c/7fb374981e31c193b1152ed8d3b0a95b671330d4
- stable/c/dd431c3ac1fc34a9268580dd59ad3e3c76b32a8c
- stable/c/a78a6f0da57d058e2009e9958fdcef66f165208c
- stable/c/be84f32bb2c981ca670922e047cdde1488b233de