CVEs / CVE-2024-36971
CVE-2024-36971: Android Kernel Remote Code Execution Vulnerability
- Known exploited in the CISA KEV catalog since 7 Aug 2024
- high 7.8 CVSS 3.1 (NVD)
- EPSS 2.7% chance of exploitation in the next 30 days, higher than 85% of CVEs (30 Oct 2026)
- Last changed at its sources
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Summary
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.
Description
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.
Affected and fixed versions
| Product | Affected | Fixed in |
|---|---|---|
| Linux Linux | from a87cb3e48ee86d29868d3f59cfb9ce1a8fa63314, before 051c0bde9f0450a2ec3d62a86d2a0d2fad117f13 | 051c0bde9f0450a2ec3d62a86d2a0d2fad117f13 |
| Linux Linux | from a87cb3e48ee86d29868d3f59cfb9ce1a8fa63314, before db0082825037794c5dba9959c9de13ca34cc5e72 | db0082825037794c5dba9959c9de13ca34cc5e72 |
| Linux Linux | from a87cb3e48ee86d29868d3f59cfb9ce1a8fa63314, before 2295a7ef5c8c49241bff769e7826ef2582e532a6 | 2295a7ef5c8c49241bff769e7826ef2582e532a6 |
| Linux Linux | from a87cb3e48ee86d29868d3f59cfb9ce1a8fa63314, before eacb8b195579c174a6d3e12a9690b206eb7f28cf | eacb8b195579c174a6d3e12a9690b206eb7f28cf |
| Linux Linux | from a87cb3e48ee86d29868d3f59cfb9ce1a8fa63314, before 81dd3c82a456b0015461754be7cb2693991421b4 | 81dd3c82a456b0015461754be7cb2693991421b4 |
| Linux Linux | from a87cb3e48ee86d29868d3f59cfb9ce1a8fa63314, before 5af198c387128a9d2ddd620b0f0803564a4d4508 | 5af198c387128a9d2ddd620b0f0803564a4d4508 |
| Linux Linux | from a87cb3e48ee86d29868d3f59cfb9ce1a8fa63314, before b8af8e6118a6605f0e495a58d591ca94a85a50fc | b8af8e6118a6605f0e495a58d591ca94a85a50fc |
| Linux Linux | from a87cb3e48ee86d29868d3f59cfb9ce1a8fa63314, before 92f1655aa2b2294d0b49925f3b875a634bd3b59e | 92f1655aa2b2294d0b49925f3b875a634bd3b59e |
| Linux Linux | 4.6 | — |
| linux linux_kernel | 4.6 | — |
| linux linux_kernel | from a87cb3e48ee8, before 051c0bde9f04 | 051c0bde9f04 |
| linux linux_kernel | from a87cb3e48ee8, before db0082825037 | db0082825037 |
| linux linux_kernel | from a87cb3e48ee8, before 2295a7ef5c8c | 2295a7ef5c8c |
| linux linux_kernel | from a87cb3e48ee8, before eacb8b195579 | eacb8b195579 |
| linux linux_kernel | from a87cb3e48ee8, before 81dd3c82a456 | 81dd3c82a456 |
| linux linux_kernel | from a87cb3e48ee8, before 5af198c38712 | 5af198c38712 |
| linux linux_kernel | from a87cb3e48ee8, before b8af8e6118a6 | b8af8e6118a6 |
| linux linux_kernel | from a87cb3e48ee8, before 92f1655aa2b2 | 92f1655aa2b2 |
| Product | Affected | Fixed in |
|---|---|---|
| Kernel (Linux) | from 4.6.0, before 4.19.316 | 4.19.316 |
| Kernel (Linux) | from 4.20.0, before 5.4.278 | 5.4.278 |
| Kernel (Linux) | from 5.5.0, before 5.10.219 | 5.10.219 |
| Kernel (Linux) | from 5.11.0, before 5.15.161 | 5.15.161 |
| Kernel (Linux) | from 5.16.0, before 6.1.94 | 6.1.94 |
| Kernel (Linux) | from 6.2.0, before 6.6.34 | 6.6.34 |
| Kernel (Linux) | from 6.7.0, before 6.9.4 | 6.9.4 |
Exploitation
| In CISA KEV since | 7 Aug 2024 |
|---|---|
| Due date for US federal agencies | 28 Aug 2024 |
| Used in ransomware campaigns | Unknown |
| Required action | Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable. |
Severity
| CVSS 3.1 | 7.8 highCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:HScored by NVD |
|---|---|
| Weakness | CWE-416 |
References
- CVE-2024-36971 on NVD
- CVE-2024-36971 in the CISA KEV catalog
- https://source.android.com/docs/security/bulletin/2024-08-01 (cited by CISA)
- https://lore.kernel.org/linux-cve-announce/[email protected]/T/#u (cited by CISA)
- CVE-2024-36971 on OSV
- https://git.kernel.org/stable/c/051c0bde9f0450a2ec3d62a86d2a0d2fad117f13 Patch
- https://git.kernel.org/stable/c/2295a7ef5c8c49241bff769e7826ef2582e532a6 Patch
- https://git.kernel.org/stable/c/5af198c387128a9d2ddd620b0f0803564a4d4508 Patch
- https://git.kernel.org/stable/c/81dd3c82a456b0015461754be7cb2693991421b4 Patch
- https://git.kernel.org/stable/c/92f1655aa2b2294d0b49925f3b875a634bd3b59e Patch
- https://git.kernel.org/stable/c/b8af8e6118a6605f0e495a58d591ca94a85a50fc Patch
- https://git.kernel.org/stable/c/db0082825037794c5dba9959c9de13ca34cc5e72 Patch
- https://git.kernel.org/stable/c/eacb8b195579c174a6d3e12a9690b206eb7f28cf Patch
- https://lists.debian.org/debian-lts-announce/2024/06/msg00020.html Mailing List
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2024-36971 US Government Resource
Sources
Exploitation status from the CISA Known Exploited Vulnerabilities catalog. EPSS scores from FIRST. Descriptions, severity and references from the National Vulnerability Database. Open-source package versions from OSV (CC-BY 4.0). Text is shown as each source states it; Stackurity does not edit it. Check the vendor's advisory before acting.
This product uses data from the NVD API but is not endorsed or certified by the NVD.