CVE-2024-56739
rtc: check if __rtc_read_time was successful in rtc_timer_do_work()
- 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- Where the record stands: published, rejected by its publisher, or superseded by another id.What do these mean?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: rtc: check if __rtc_read_time was successful in rtc_timer_do_work() If the __rtc_read_time call fails,, the struct rtc_time tm; may contain uninitialized data, or an illegal date/time read from the RTC hardware. When calling rtc_tm_to_ktime later, the result may be a very large value (possibly KTIME_MAX). If there are periodic timers in rtc->timerqueue, they will continually expire, may causing kernel softlockup.
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
2.6.38
References 9
git.kernel.org
- stable/c/39ad0a1ae17b54509cd9e93dcd8cec16e7c12d3f
- stable/c/44b3257ff705d63d5f00ef8ed314a0eeb7ec37f2
- stable/c/0d68e8514d9040108ff7d1b37ca71096674b6efe
- stable/c/246f621d363988e7040f4546d20203dc713fa3e1
- stable/c/fde56535505dde3336df438e949ef4742b6d6d6e
- stable/c/dd4b1cbcc916fad5d10c2662b62def9f05e453d4
- stable/c/a1f0b4af90cc18b10261ecde56c6a56b22c75bd1
- stable/c/e77bce0a8c3989b4173c36f4195122bca8f4a3e1
- stable/c/e8ba8a2bc4f60a1065f23d6a0e7cbea945a0f40d