Bug 2273252 (CVE-2024-26731) - CVE-2024-26731 kernel: bpf, sockmap: Fix NULL pointer dereference in sk_psock_verdict_data_ready()
Summary: CVE-2024-26731 kernel: bpf, sockmap: Fix NULL pointer dereference in sk_psock...
Keywords:
Status: NEW
Alias: CVE-2024-26731
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Product Security
QA Contact:
URL:
Whiteboard:
Depends On: 2273253
Blocks: 2273246
TreeView+ depends on / blocked
 
Reported: 2024-04-04 01:16 UTC by Robb Gatica
Modified: 2024-09-19 20:49 UTC (History)
49 users (show)

Fixed In Version: kernel 6.1.80, kernel 6.6.19, kernel 6.7.7, kernel 6.8
Doc Type: If docs needed, set a value
Doc Text:
A vulnerability was found in the Linux kernel, where a race condition is present between the sk_psock_verdict_data_ready() and sk_psock_stop_verdict() functions. If the functions are called concurrently, the psock (packet socket) object which both access could be NULL, causing a NULL pointer dereference, leading to memory corruption or crashes.
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Description Robb Gatica 2024-04-04 01:16:31 UTC 
In the Linux kernel, the following vulnerability has been resolved:

bpf, sockmap: Fix NULL pointer dereference in sk_psock_verdict_data_ready()

The Linux kernel CVE team has assigned CVE-2024-26731 to this issue.

Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2024040358-CVE-2024-26731-e084@gregkh/T
Comment 1 Robb Gatica 2024-04-04 01:17:06 UTC 
Created kernel tracking bugs for this issue:

Affects: fedora-all [bug 2273253]
Comment 2 Alex 2024-06-09 13:02:20 UTC 
The result of automatic check (that is developed by Alexander Larkin) for this CVE-2024-26731 is: 	SKIP	The Fixes patch not applied yet, so unlikely that actual: 6df7f764cd3cf5a03a4a47b23be47e57e41fcd85	YES			NO	NO	unknown (where first YES/NO value means if related sources built).
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