CVE-2025-40200In the Linux kernel, the following vulnerability has been resolved: Squashfs: reject negative file sizes in squashfs_read_inode() Syskaller reports a "WARNING in ovl_copy_up_file" in overlayfs.
Updated under an hour ago ()
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In the Linux kernel, the following vulnerability has been resolved: Squashfs: reject negative file sizes in squashfs_read_inode() Syskaller reports a "WARNING in ovl_copy_up_file" in overlayfs. This warning is ultimately caused because the underlying Squashfs file system returns a file with a negative file size. This commit checks for a negative file size and returns EINVAL. [phillip@squashfs.org.uk: only need to check 64 bit quantity]
- CVSS
- Not yet scored
- Weakness (CWE)
- Not given
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Not given
- NVD analysis
- Deferred
- Record last updated
- Jun 17, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
No affected products are listed yet.
References
- https://git.kernel.org/stable/c/2871c74caa3f4f05b429e6bfefebac62dbf1b408
- https://git.kernel.org/stable/c/54170057a5fadd24a37b70de41e61d39284d9bd7
- https://git.kernel.org/stable/c/8118f66124895829443d09c207e654adcb2f9321
- https://git.kernel.org/stable/c/875fb3f87ae0225b881319ba016a1a8c4ffd5812
- https://git.kernel.org/stable/c/8c7aad76751816207fee556d44aa88a710824810
- https://git.kernel.org/stable/c/9f1c14c1de1bdde395f6cc893efa4f80a2ae3b2b
- https://git.kernel.org/stable/c/f271155ff31aca8ef82c61c8df23ca97e9a77dd4
- https://git.kernel.org/stable/c/fbfc745db628de31f5c089147deeb87e95b89e66
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