cve-2020-8835
Vulnerability from cvelistv5
Published
2020-04-02 18:00
Modified
2024-09-17 02:15
Summary
In the Linux kernel 5.5.0 and newer, the bpf verifier (kernel/bpf/verifier.c) did not properly restrict the register bounds for 32-bit operations, leading to out-of-bounds reads and writes in kernel memory. The vulnerability also affects the Linux 5.4 stable series, starting with v5.4.7, as the introducing commit was backported to that branch. This vulnerability was fixed in 5.6.1, 5.5.14, and 5.4.29. (issue is aka ZDI-CAN-10780)
References
security@ubuntu.comhttp://www.openwall.com/lists/oss-security/2021/07/20/1Exploit, Mailing List, Third Party Advisory
security@ubuntu.comhttps://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next.git/commit/?id=f2d67fec0b43edce8c416101cdc52e71145b5fefPatch, Vendor Advisory
security@ubuntu.comhttps://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=f2d67fec0b43edce8c416101cdc52e71145b5fefPatch, Vendor Advisory
security@ubuntu.comhttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/F7OONYGMSYBEFHLHZJK3GOI5Z553G4LD/
security@ubuntu.comhttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TF4PQZBEPNXDSK5DOBMW54OCLP25FTCD/
security@ubuntu.comhttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/YXBWSHZ6DJIZVXKXGZPK6QPFCY7VKZEG/
security@ubuntu.comhttps://lore.kernel.org/bpf/20200330160324.15259-1-daniel%40iogearbox.net/T/
security@ubuntu.comhttps://security.netapp.com/advisory/ntap-20200430-0004/Third Party Advisory
security@ubuntu.comhttps://usn.ubuntu.com/4313-1/Third Party Advisory
security@ubuntu.comhttps://usn.ubuntu.com/usn/usn-4313-1Third Party Advisory
security@ubuntu.comhttps://www.openwall.com/lists/oss-security/2020/03/30/3Mailing List, Patch, Third Party Advisory
security@ubuntu.comhttps://www.thezdi.com/blog/2020/3/19/pwn2own-2020-day-one-resultsThird Party Advisory
af854a3a-2127-422b-91ae-364da2661108http://www.openwall.com/lists/oss-security/2021/07/20/1Exploit, Mailing List, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next.git/commit/?id=f2d67fec0b43edce8c416101cdc52e71145b5fefPatch, Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=f2d67fec0b43edce8c416101cdc52e71145b5fefPatch, Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/F7OONYGMSYBEFHLHZJK3GOI5Z553G4LD/
af854a3a-2127-422b-91ae-364da2661108https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TF4PQZBEPNXDSK5DOBMW54OCLP25FTCD/
af854a3a-2127-422b-91ae-364da2661108https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/YXBWSHZ6DJIZVXKXGZPK6QPFCY7VKZEG/
af854a3a-2127-422b-91ae-364da2661108https://lore.kernel.org/bpf/20200330160324.15259-1-daniel%40iogearbox.net/T/
af854a3a-2127-422b-91ae-364da2661108https://security.netapp.com/advisory/ntap-20200430-0004/Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://usn.ubuntu.com/4313-1/Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://usn.ubuntu.com/usn/usn-4313-1Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://www.openwall.com/lists/oss-security/2020/03/30/3Mailing List, Patch, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://www.thezdi.com/blog/2020/3/19/pwn2own-2020-day-one-resultsThird Party Advisory
Impacted products
Vendor Product Version
Linux kernel Linux kernel Version: 5.6-stable   < 5.6.1
Version: 5.5-stable   < 5.5.14
Version: 5.4.7   < 5.4-stable*
Create a notification for this product.
Show details on NVD website


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La vulnerabilidad también afecta a la serie estable de Linux versión 5.4, comenzando con la versión v5.4.7, ya que el commit de introducción fue respaldado en esa derivación. Esta vulnerabilidad fue corregida en las versiones 5.6.1, 5.5.14 y 5.4.29. 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   },
}


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Sightings

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Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
  • Confirmed: The vulnerability is confirmed from an analyst perspective.
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  • Patched: This vulnerability was successfully patched by the user reporting the sighting.
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