Bug 2273274 (CVE-2024-26737) - CVE-2024-26737 kernel: bpf: Fix racing between bpf_timer_cancel_and_free and bpf_timer_cancel
Summary: CVE-2024-26737 kernel: bpf: Fix racing between bpf_timer_cancel_and_free and ...
Keywords:
Status: NEW
Alias: CVE-2024-26737
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: 2273275
Blocks: 2273246
TreeView+ depends on / blocked
 
Reported: 2024-04-04 01:35 UTC by Robb Gatica
Modified: 2024-08-15 07:43 UTC (History)
49 users (show)

Fixed In Version: kernel 5.15.150, 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 use-after-free flaw was found in the Linux kernel’s BPF functionality. This flaw allows a local user to crash the system.
Clone Of:
Environment:
Last Closed:
Embargoed:

Attachments (Terms of Use)


Links
System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHBA-2024:5114 0 None None None 2024-08-08 07:41:16 UTC
Red Hat Product Errata RHBA-2024:5450 0 None None None 2024-08-15 07:43:42 UTC
Red Hat Product Errata RHSA-2024:4928 0 None None None 2024-07-31 00:40:09 UTC
Red Hat Product Errata RHSA-2024:5066 0 None None None 2024-08-07 09:37:11 UTC
Red Hat Product Errata RHSA-2024:5067 0 None None None 2024-08-07 00:12:15 UTC

Description Robb Gatica 2024-04-04 01:35:38 UTC 
In the Linux kernel, the following vulnerability has been resolved:

bpf: Fix racing between bpf_timer_cancel_and_free and bpf_timer_cancel

The Linux kernel CVE team has assigned CVE-2024-26737 to this issue.

Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2024040359-CVE-2024-26737-a9c3@gregkh/T
Comment 1 Robb Gatica 2024-04-04 01:36:14 UTC 
Created kernel tracking bugs for this issue:

Affects: fedora-all [bug 2273275]
Comment 4 Alex 2024-06-09 15:22:54 UTC 
The result of automatic check (that is developed by Alexander Larkin) for this CVE-2024-26737 is: CHECK	Maybe valid. Check manually. with impact MODERATE (that is approximation based on flags LOCK INIT BPF RACE UAF TIMER  ; these flags parsed automatically based on patche data). Such automatic check happens only for Low/Moderates (and only when not from reporter, but parsing already existing CVE). Highs always checked manually (I check it myself and then we check it again in Remediation team). In rare cases some of the Moderates could be increased to High later.
Comment 9 errata-xmlrpc 2024-07-31 00:40:05 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9

Via RHSA-2024:4928 https://access.redhat.com/errata/RHSA-2024:4928
Comment 10 errata-xmlrpc 2024-08-07 00:12:12 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9.2 Extended Update Support

Via RHSA-2024:5067 https://access.redhat.com/errata/RHSA-2024:5067
Comment 11 errata-xmlrpc 2024-08-07 09:37:07 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9.2 Extended Update Support

Via RHSA-2024:5066 https://access.redhat.com/errata/RHSA-2024:5066
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