{"id":"CVE-2025-40200","state":"PUBLISHED","title":"Squashfs: reject negative file sizes in squashfs_read_inode()","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nSquashfs: reject negative file sizes in squashfs_read_inode()\n\nSyskaller reports a \"WARNING in ovl_copy_up_file\" in overlayfs.\n\nThis warning is ultimately caused because the underlying Squashfs file\nsystem returns a file with a negative file size.\n\nThis commit checks for a negative file size and returns EINVAL.\n\n[phillip@squashfs.org.uk: only need to check 64 bit quantity]","publishedAt":"2025-11-12T21:56:33.783Z","updatedAt":"2026-05-11T21:44:41.773Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"6545b246a2c815a8fcd07d58240effb6ec3481b1","status":"affected","lessThan":"54170057a5fadd24a37b70de41e61d39284d9bd7","versionType":"git"},{"version":"6545b246a2c815a8fcd07d58240effb6ec3481b1","status":"affected","lessThan":"2871c74caa3f4f05b429e6bfefebac62dbf1b408","versionType":"git"},{"version":"6545b246a2c815a8fcd07d58240effb6ec3481b1","status":"affected","lessThan":"fbfc745db628de31f5c089147deeb87e95b89e66","versionType":"git"},{"version":"6545b246a2c815a8fcd07d58240effb6ec3481b1","status":"affected","lessThan":"8118f66124895829443d09c207e654adcb2f9321","versionType":"git"},{"version":"6545b246a2c815a8fcd07d58240effb6ec3481b1","status":"affected","lessThan":"8c7aad76751816207fee556d44aa88a710824810","versionType":"git"},{"version":"6545b246a2c815a8fcd07d58240effb6ec3481b1","status":"affected","lessThan":"875fb3f87ae0225b881319ba016a1a8c4ffd5812","versionType":"git"},{"version":"6545b246a2c815a8fcd07d58240effb6ec3481b1","status":"affected","lessThan":"f271155ff31aca8ef82c61c8df23ca97e9a77dd4","versionType":"git"},{"version":"6545b246a2c815a8fcd07d58240effb6ec3481b1","status":"affected","lessThan":"9f1c14c1de1bdde395f6cc893efa4f80a2ae3b2b","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["fs/squashfs/inode.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"2.6.29","status":"affected"},{"version":"0","status":"unaffected","lessThan":"2.6.29","versionType":"semver"},{"version":"5.4.301","status":"unaffected","lessThanOrEqual":"5.4.*","versionType":"semver"},{"version":"5.10.246","status":"unaffected","lessThanOrEqual":"5.10.*","versionType":"semver"},{"version":"5.15.195","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"6.1.157","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.113","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.54","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.17.4","status":"unaffected","lessThanOrEqual":"6.17.*","versionType":"semver"},{"version":"6.18","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["fs/squashfs/inode.c"]}],"references":["https://git.kernel.org/stable/c/54170057a5fadd24a37b70de41e61d39284d9bd7","https://git.kernel.org/stable/c/2871c74caa3f4f05b429e6bfefebac62dbf1b408","https://git.kernel.org/stable/c/fbfc745db628de31f5c089147deeb87e95b89e66","https://git.kernel.org/stable/c/8118f66124895829443d09c207e654adcb2f9321","https://git.kernel.org/stable/c/8c7aad76751816207fee556d44aa88a710824810","https://git.kernel.org/stable/c/875fb3f87ae0225b881319ba016a1a8c4ffd5812","https://git.kernel.org/stable/c/f271155ff31aca8ef82c61c8df23ca97e9a77dd4","https://git.kernel.org/stable/c/9f1c14c1de1bdde395f6cc893efa4f80a2ae3b2b"],"weaknesses":[],"ingestedAt":"2026-10-29T20:09:09.358Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2025/40xxx/CVE-2025-40200.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2025-40200","state":"PUBLISHED","datePublished":"2025-11-12T21:56:33.783Z","dateUpdated":"2026-05-11T21:44:41.773Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2025-04-16T07:20:57.178Z"},"containers":{"cna":{"title":"Squashfs: reject negative file sizes in squashfs_read_inode()","descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nSquashfs: reject negative file sizes in squashfs_read_inode()\n\nSyskaller reports a \"WARNING in ovl_copy_up_file\" in overlayfs.\n\nThis warning is ultimately caused because the underlying Squashfs file\nsystem returns a file with a negative file size.\n\nThis commit checks for a negative file size and returns EINVAL.\n\n[phillip@squashfs.org.uk: only need to check 64 bit quantity]"}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"6545b246a2c815a8fcd07d58240effb6ec3481b1","status":"affected","lessThan":"54170057a5fadd24a37b70de41e61d39284d9bd7","versionType":"git"},{"version":"6545b246a2c815a8fcd07d58240effb6ec3481b1","status":"affected","lessThan":"2871c74caa3f4f05b429e6bfefebac62dbf1b408","versionType":"git"},{"version":"6545b246a2c815a8fcd07d58240effb6ec3481b1","status":"affected","lessThan":"fbfc745db628de31f5c089147deeb87e95b89e66","versionType":"git"},{"version":"6545b246a2c815a8fcd07d58240effb6ec3481b1","status":"affected","lessThan":"8118f66124895829443d09c207e654adcb2f9321","versionType":"git"},{"version":"6545b246a2c815a8fcd07d58240effb6ec3481b1","status":"affected","lessThan":"8c7aad76751816207fee556d44aa88a710824810","versionType":"git"},{"version":"6545b246a2c815a8fcd07d58240effb6ec3481b1","status":"affected","lessThan":"875fb3f87ae0225b881319ba016a1a8c4ffd5812","versionType":"git"},{"version":"6545b246a2c815a8fcd07d58240effb6ec3481b1","status":"affected","lessThan":"f271155ff31aca8ef82c61c8df23ca97e9a77dd4","versionType":"git"},{"version":"6545b246a2c815a8fcd07d58240effb6ec3481b1","status":"affected","lessThan":"9f1c14c1de1bdde395f6cc893efa4f80a2ae3b2b","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["fs/squashfs/inode.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"2.6.29","status":"affected"},{"version":"0","status":"unaffected","lessThan":"2.6.29","versionType":"semver"},{"version":"5.4.301","status":"unaffected","lessThanOrEqual":"5.4.*","versionType":"semver"},{"version":"5.10.246","status":"unaffected","lessThanOrEqual":"5.10.*","versionType":"semver"},{"version":"5.15.195","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"6.1.157","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.113","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.54","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.17.4","status":"unaffected","lessThanOrEqual":"6.17.*","versionType":"semver"},{"version":"6.18","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["fs/squashfs/inode.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/54170057a5fadd24a37b70de41e61d39284d9bd7"},{"url":"https://git.kernel.org/stable/c/2871c74caa3f4f05b429e6bfefebac62dbf1b408"},{"url":"https://git.kernel.org/stable/c/fbfc745db628de31f5c089147deeb87e95b89e66"},{"url":"https://git.kernel.org/stable/c/8118f66124895829443d09c207e654adcb2f9321"},{"url":"https://git.kernel.org/stable/c/8c7aad76751816207fee556d44aa88a710824810"},{"url":"https://git.kernel.org/stable/c/875fb3f87ae0225b881319ba016a1a8c4ffd5812"},{"url":"https://git.kernel.org/stable/c/f271155ff31aca8ef82c61c8df23ca97e9a77dd4"},{"url":"https://git.kernel.org/stable/c/9f1c14c1de1bdde395f6cc893efa4f80a2ae3b2b"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-05-11T21:44:41.773Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.29","versionEndExcluding":"5.4.301"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.29","versionEndExcluding":"5.10.246"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.29","versionEndExcluding":"5.15.195"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.29","versionEndExcluding":"6.1.157"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.29","versionEndExcluding":"6.6.113"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.29","versionEndExcluding":"6.12.54"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.29","versionEndExcluding":"6.17.4"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.29","versionEndExcluding":"6.18"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}}}}}