CVE-2024-36971
In the Linux kernel, the following vulnerability has been resolved:
net: fix __dst_negative_advice() race
__dst_negative_advice() does not enforce proper RCU rules when
sk->dst_cache must be cleared, leading to possible UAF.
RCU rules are that we must first clear sk->sk_dst_cache,
then call dst_release(old_dst).
Note that sk_dst_reset(sk) is implementing this protocol correctly,
while __dst_negative_advice() uses the wrong order.
Given that ip6_negative_advice() has special logic
against RTF_CACHE, this means each of the three ->negative_advice()
existing methods must perform the sk_dst_reset() themselves.
Note the check against NULL dst is centralized in
__dst_negative_advice(), there is no need to duplicate
it in various callbacks.
Many thanks to Clement Lecigne for tracking this issue.
This old bug became visible after the blamed commit, using UDP sockets.
Weaknesses
- CWE-416
- Use After Free
- CVE Status
- PUBLISHED
- NVD Status
- Analyzed
- CNA
- kernel.org
- Published Date
-
2024-06-10 09:15:09
(3 months ago) - Updated Date
-
2024-08-08 14:49:52
(5 weeks ago)
Android Kernel Remote Code Execution Vulnerability (CISA - Known Exploited Vulnerabilities Catalog)
- Description
- Android contains an unspecified vulnerability in the kernel that allows for remote code execution. This vulnerability resides in Linux Kernel and could impact other products, including but not limited to Android OS.
- Required Action
- Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
- Known to be Used in Ransomware Campaigns
- Unknown
- Notes
- This vulnerability affects a common open-source component, third-party library, or a protocol used by different products. Please check with specific vendors for information on patching status. For more information, please see: https://source.android.com/docs/security/bulletin/2024-08-01, https://lore.kernel.org/linux-cve-announce/20240610090330.1347021-2-lee@kernel.org/T/#u ; https://nvd.nist.gov/vuln/detail/CVE-2024-36971
- Vendor
- Android
- Product
- Kernel
- In CISA Catalog from
-
2024-08-07
(5 weeks ago) - Due Date
-
2024-08-28
(2 weeks ago)
Affected Products
Configuration #1
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