CVE-2023-53782
In the Linux kernel, the following vulnerability has been resolved: dccp: Fix out of bounds access in DCCP error handler There was a previous attempt to fix an out-of-bounds access in the DCCP error handlers, but that fix assumed that the error handlers only want to access the first 8 bytes of the DCCP header. Actually, they also look at the DCCP sequence number, which is stored beyond 8 bytes, so an explicit pskb_may_pull() is required.
Affected versions
Linux kernel versions
3.2.87,
3.10.105,
3.12.68,
3.16.42,
4.4.34,
4.8.10,
4.9
and later are affected. Fixed in
4.14.326,
4.19.295,
5.4.257,
5.10.195,
5.15.132,
6.1.53,
6.4.16,
6.5.3,
6.6
and their respective stable series.
References
The following references provide additional information about CVE-2023-53782 including vendor advisories, patch commits, exploit details, and third-party analysis. Links are sourced from the NIST NVD database.
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PatchKernel patch commithttps://git.kernel.org/stable/c/177212bf6dc1ff2d13d0409cddc5c9e81feec63d
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PatchKernel patch commithttps://git.kernel.org/stable/c/3533e10272555c422a7d51ebc0ce8c483429f7f2
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PatchKernel patch commithttps://git.kernel.org/stable/c/4b8a938e329ae4eb54b73b0c87b5170607b038a8
Frequently asked questions
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What is CVE-2023-53782?
CVE-2023-53782 is a unscored severity Linux kernel vulnerability . It affects Linux kernel versions from 3.2.87 onward and has been patched in 4.14.326, 4.19.295, 5.4.257 and others. CVE-2023-53782 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
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Is there a patch available for CVE-2023-53782?
Yes — CVE-2023-53782 has been patched. Fixed versions include 4.14.326, 4.19.295, 5.4.257 and others. If you are running Linux kernel 3.2.87 or later up to the fix versions, apply the relevant patch for your kernel branch.
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Is CVE-2023-53782 actively exploited?
No — CVE-2023-53782 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.