CVE-2024-26955

HIGH
Published May 1, 2024 Modified Dec 23, 2025

Description

In the Linux kernel, the following vulnerability has been resolved: nilfs2: prevent kernel bug at submit_bh_wbc() Fix a bug where nilfs_get_block() returns a successful status when searching and inserting the specified block both fail inconsistently. If this inconsistent behavior is not due to a previously fixed bug, then an unexpected race is occurring, so return a temporary error -EAGAIN instead. This prevents callers such as __block_write_begin_int() from requesting a read into a buffer that is not mapped, which would cause the BUG_ON check for the BH_Mapped flag in submit_bh_wbc() to fail.

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CVSS v3.1 Score

7.8
HIGH
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Affected Products

Vendor Product
linux linux_kernel
linux linux_kernel
linux linux_kernel
linux linux_kernel
linux linux_kernel
linux linux_kernel
linux linux_kernel
linux linux_kernel
debian debian_linux

References

Advisories & Patches

https://git.kernel.org/stable/c/0c8aa4cfda4e4adb15d5b6536d155eca9c9cd44c https://git.kernel.org/stable/c/192e9f9078c96be30b31c4b44d6294b24520fce5 https://git.kernel.org/stable/c/269cdf353b5bdd15f1a079671b0f889113865f20 https://git.kernel.org/stable/c/32eaee72e96590a75445c8a6c7c1057673b47e07 https://git.kernel.org/stable/c/48d443d200237782dc82e6b60663ec414ef02e39 https://git.kernel.org/stable/c/76ffbe911e2798c7296968f5fd72f7bf67207a8d https://git.kernel.org/stable/c/91e4c4595fae5e87069e44687ae879091783c183 https://git.kernel.org/stable/c/ca581d237f3b8539c044205bb003de71d75d227c https://git.kernel.org/stable/c/f0fe7ad5aff4f0fcf988913313c497de85f1e186 https://git.kernel.org/stable/c/0c8aa4cfda4e4adb15d5b6536d155eca9c9cd44c https://git.kernel.org/stable/c/192e9f9078c96be30b31c4b44d6294b24520fce5 https://git.kernel.org/stable/c/269cdf353b5bdd15f1a079671b0f889113865f20 https://git.kernel.org/stable/c/32eaee72e96590a75445c8a6c7c1057673b47e07 https://git.kernel.org/stable/c/48d443d200237782dc82e6b60663ec414ef02e39 https://git.kernel.org/stable/c/76ffbe911e2798c7296968f5fd72f7bf67207a8d https://git.kernel.org/stable/c/91e4c4595fae5e87069e44687ae879091783c183 https://git.kernel.org/stable/c/ca581d237f3b8539c044205bb003de71d75d227c https://git.kernel.org/stable/c/f0fe7ad5aff4f0fcf988913313c497de85f1e186

Frequently Asked Questions

What is CVE-2024-26955? +
In the Linux kernel, the following vulnerability has been resolved: nilfs2: prevent kernel bug at submit_bh_wbc() Fix a bug where nilfs_get_block() returns a successful status when searching and inserting the specified block both fail inconsistently. If this inconsistent behavior is not due to a previously fixed bug, then an unexpected race is occurring, so return a temporary error -EAGAIN instead. This prevents callers such as __block_write_begin_int() from requesting a read into a buffer that is not mapped, which would cause the BUG_ON check for the BH_Mapped flag in submit_bh_wbc() to fail. It has a CVSS v3.1 base score of 7.8 (HIGH).
How severe is CVE-2024-26955? +
CVE-2024-26955 has a CVSS v3.1 score of 7.8 out of 10, rated HIGH. This is a high-severity vulnerability that should be prioritized for patching.
What products are affected by CVE-2024-26955? +
CVE-2024-26955 affects products from debian, linux, specifically: debian_linux, linux_kernel. Check the affected products table above for specific version ranges.
How do I check if I'm vulnerable to CVE-2024-26955? +
You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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