Overview
- 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.
- Source
- 416baaa9-dc9f-4396-8d5f-8c081fb06d67
- NVD status
- Analyzed
Risk scores
CVSS 3.1
- Type
- Primary
- Base score
- 7.8
- Impact score
- 5.9
- Exploitability score
- 1.8
- Vector string
- CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- Severity
- HIGH
Known exploits
Data from CISA
- Vulnerability name
- Android Kernel Remote Code Execution Vulnerability
- Exploit added on
- Aug 7, 2024
- Exploit action due
- Aug 28, 2024
- Required action
- Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
Social media
- Hype score
- Not currently trending
Google has released security updates addressing a zero-day vulnerability (CVE-2024-36971) affecting: https://t.co/9xrzbMC2Jq
@linux_ly
28 Oct 2024
44 Impressions
0 Retweets
1 Like
0 Bookmarks
0 Replies
1 Quote
Google Patches New Android Kernel Vulnerability Exploited in the Wild Google has addressed a high-severity security flaw impacting the Android kernel that it has been actively exploited in the wild. The vulnerability, tracked as CVE-2024-36971, has bee... https://t.co/97CBD3g2md
@SecurityAid
25 Oct 2024
12 Impressions
0 Retweets
0 Likes
0 Bookmarks
0 Replies
0 Quotes
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