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CVE-2023-52603

7.8 · HIGH

In the Linux kernel, the following vulnerability has been resolved: UBSAN: array-index-out-of-bounds in dtSplitRoot Syzkaller reported the following issue: oop0: detected capacity change from 0…

Published Mar 6, 2024CWE-129EPSS 0.29%

Overview

CVE-2023-52603 is a high-severity vulnerability. It was published on March 6, 2024 and has a CVSS 3.1 base score of 7.8 (HIGH).

This vulnerability has a CVSS 3.1 base score of 7.8, rated HIGH. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

Technical description

In the Linux kernel, the following vulnerability has been resolved:

UBSAN: array-index-out-of-bounds in dtSplitRoot

Syzkaller reported the following issue:

oop0: detected capacity change from 0 to 32768

UBSAN: array-index-out-of-bounds in fs/jfs/jfs_dtree.c:1971:9

index -2 is out of range for type 'struct dtslot [128]'

CPU: 0 PID: 3613 Comm: syz-executor270 Not tainted 6.0.0-syzkaller-09423-g493ffd6605b2 #0

Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022

Call Trace:

<TASK>

__dump_stack lib/dump_stack.c:88 [inline]

dump_stack_lvl+0x1b1/0x28e lib/dump_stack.c:106

ubsan_epilogue lib/ubsan.c:151 [inline]

__ubsan_handle_out_of_bounds+0xdb/0x130 lib/ubsan.c:283

dtSplitRoot+0x8d8/0x1900 fs/jfs/jfs_dtree.c:1971

dtSplitUp fs/jfs/jfs_dtree.c:985 [inline]

dtInsert+0x1189/0x6b80 fs/jfs/jfs_dtree.c:863

jfs_mkdir+0x757/0xb00 fs/jfs/namei.c:270

vfs_mkdir+0x3b3/0x590 fs/namei.c:4013

do_mkdirat+0x279/0x550 fs/namei.c:4038

__do_sys_mkdirat fs/nam

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

Refgit.kernel.org/stable/c/27e56f59bab5ddafbcfe69ad7a4a6ea1279c1b16Refgit.kernel.org/stable/c/6e2902ecc77e9760a9fc447f56d598383e2372d2Refgit.kernel.org/stable/c/7aa33854477d9c346f5560a1a1fcb3fe7783e2a8Refgit.kernel.org/stable/c/e30b52a2ea3d1e0aaee68096957cf90a2f4ec5afRefgit.kernel.org/stable/c/e4cbc857d75d4e22a1f75446e7480b1f305d8d60Refgit.kernel.org/stable/c/e4ce01c25ccbea02a09a5291c21749b1fc358e39Refgit.kernel.org/stable/c/edff092a59260bf0b0a2eba219cb3da6372c2f9fRefgit.kernel.org/stable/c/fd3486a893778770557649fe28afa5e463d4ed07Refgit.kernel.org/stable/c/27e56f59bab5ddafbcfe69ad7a4a6ea1279c1b16Refgit.kernel.org/stable/c/6e2902ecc77e9760a9fc447f56d598383e2372d2

How CyberStrike helps

Frequently asked questions

What is CVE-2023-52603?

CVE-2023-52603 is a high-severity vulnerability. It was published on March 6, 2024 and has a CVSS 3.1 base score of 7.8 (HIGH).

How severe is CVE-2023-52603?

This vulnerability has a CVSS 3.1 base score of 7.8, rated HIGH. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2023-52603?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2023-52603?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2023-52603 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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