CVE - CVE-2020-36791

CVE-ID
CVE-2020-36791	Learn more at National Vulnerability Database (NVD) • CVSS Severity Rating • Fix Information • Vulnerable Software Versions • SCAP Mappings • CPE Information
Description
In the Linux kernel, the following vulnerability has been resolved: net_sched: keep alloc_hash updated after hash allocation In commit 599be01ee567 ("net_sched: fix an OOB access in cls_tcindex") I moved cp->hash calculation before the first tcindex_alloc_perfect_hash(), but cp->alloc_hash is left untouched. This difference could lead to another out of bound access. cp->alloc_hash should always be the size allocated, we should update it after this tcindex_alloc_perfect_hash().
References
Note: References are provided for the convenience of the reader to help distinguish between vulnerabilities. The list is not intended to be complete.
MISC:https://blog.cdthoughts.ch/2021/03/16/syzbot-bug.html URL:https://blog.cdthoughts.ch/2021/03/16/syzbot-bug.html MISC:https://git.kernel.org/stable/c/0d1c3530e1bd38382edef72591b78e877e0edcd3 URL:https://git.kernel.org/stable/c/0d1c3530e1bd38382edef72591b78e877e0edcd3 MISC:https://git.kernel.org/stable/c/557d015ffb27b672e24e6ad141fd887783871dc2 URL:https://git.kernel.org/stable/c/557d015ffb27b672e24e6ad141fd887783871dc2 MISC:https://git.kernel.org/stable/c/9f8b6c44be178c2498a00b270872a6e30e7c8266 URL:https://git.kernel.org/stable/c/9f8b6c44be178c2498a00b270872a6e30e7c8266 MISC:https://git.kernel.org/stable/c/bd3ee8fb6371b45c71c9345cc359b94da2ddefa9 URL:https://git.kernel.org/stable/c/bd3ee8fb6371b45c71c9345cc359b94da2ddefa9 MISC:https://git.kernel.org/stable/c/c4453d2833671e3a9f6bd52f0f581056c3736386 URL:https://git.kernel.org/stable/c/c4453d2833671e3a9f6bd52f0f581056c3736386 MISC:https://git.kernel.org/stable/c/d23faf32e577922b6da20bf3740625c1105381bf URL:https://git.kernel.org/stable/c/d23faf32e577922b6da20bf3740625c1105381bf MISC:https://git.kernel.org/stable/c/d6cdc5bb19b595486fb2e6661e5138d73a57f454 URL:https://git.kernel.org/stable/c/d6cdc5bb19b595486fb2e6661e5138d73a57f454 MISC:https://syzkaller.appspot.com/bug?id=ea260693da894e7b078d18fca2c9c0a19b457534 URL:https://syzkaller.appspot.com/bug?id=ea260693da894e7b078d18fca2c9c0a19b457534
Assigning CNA
kernel.org
Date Record Created
20240226	Disclaimer: The record creation date may reflect when the CVE ID was allocated or reserved, and does not necessarily indicate when this vulnerability was discovered, shared with the affected vendor, publicly disclosed, or updated in CVE.
Phase (Legacy)
Assigned (20240226)
Votes (Legacy)

Comments (Legacy)

Proposed (Legacy)
N/A
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