CVE-2023-52615
hwrng: core - Fix page fault dead lock on mmap-ed hwrng
- 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- Where the record stands: published, rejected by its publisher, or superseded by another id.What do these mean?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: hwrng: core - Fix page fault dead lock on mmap-ed hwrng There is a dead-lock in the hwrng device read path. This triggers when the user reads from /dev/hwrng into memory also mmap-ed from /dev/hwrng. The resulting page fault triggers a recursive read which then dead-locks. Fix this by using a stack buffer when calling copy_to_user.
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
2.6.33
References 8
git.kernel.org
- stable/c/eafd83b92f6c044007a3591cbd476bcf90455990
- stable/c/5030d4c798863ccb266563201b341a099e8cdd48
- stable/c/c6a8111aacbfe7a8a70f46cc0de8eed00561693c
- stable/c/26cc6d7006f922df6cc4389248032d955750b2a0
- stable/c/aa8aa16ed9adf1df05bb339d588cf485a011839e
- stable/c/ecabe8cd456d3bf81e92c53b074732f3140f170d
- stable/c/6822a14271786150e178869f1495cc03e74c5029
- stable/c/78aafb3884f6bc6636efcc1760c891c8500b9922