Bug 2405713 (CVE-2023-53705) - CVE-2023-53705 kernel: ipv6: Fix out-of-bounds access in ipv6_find_tlv()
Summary: CVE-2023-53705 kernel: ipv6: Fix out-of-bounds access in ipv6_find_tlv()
Keywords:
Status: NEW
Alias: CVE-2023-53705
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Product Security DevOps Team
QA Contact:
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2025-10-22 14:01 UTC by OSIDB Bzimport
Modified: 2025-10-29 10:32 UTC (History)
0 users

Fixed In Version:
Clone Of:
Environment:
Last Closed:
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Description OSIDB Bzimport 2025-10-22 14:01:26 UTC 
In the Linux kernel, the following vulnerability has been resolved:

ipv6: Fix out-of-bounds access in ipv6_find_tlv()

optlen is fetched without checking whether there is more than one byte to parse.
It can lead to out-of-bounds access.

Found by InfoTeCS on behalf of Linux Verification Center
(linuxtesting.org) with SVACE.
Comment 1 Jon Moroney 2025-10-22 18:24:14 UTC 
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2025102212-CVE-2023-53705-38d9@gregkh/T
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