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CVE-2025-68820 In the Linux kernel, the following vulnerability has been resolved: ext4: xattr: fix null pointer deref in…
Description
In the Linux kernel, the following vulnerability has been resolved: ext4: xattr: fix null pointer deref in ext4_raw_inode() If ext4_get_inode_loc() fails (e.g. if it returns -EFSCORRUPTED), iloc.bh will remain set to NULL. Since ext4_xattr_inode_dec_ref_all() lacks error checking, this will lead to a null pointer dereference in ext4_raw_inode(), called right after ext4_get_inode_loc(). Found by Linux Verification Center (linuxtesting.org) with SVACE.
Affected products and versions
| Product | Affected versions | Fixed in |
|---|---|---|
| Linux 6.19 | earliest → < 6.19 | 6.19 |
| Linux 6.18 | earliest → < 6.18.3 | 6.18.3 |
| Linux | 6.15 | No fix stated |
| Linux 6.12 | earliest → < 6.12.64 | 6.12.64 |
| Linux 6.6 | earliest → < 6.6.120 | 6.6.120 |
| Linux 6.1 | earliest → < 6.1.160 | 6.1.160 |
| Linux 5.15 | earliest → < 5.15.198 | 5.15.198 |
| Linux 5.10 | earliest → < 5.10.248 | 5.10.248 |
| SIMATIC S7-1500 CPU 1518-4 PN/DP MFP 3.1 | 3.1.7 → latest | No fix stated |
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| Product | Affected versions | Fixed in |
|---|---|---|
| SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP 3.1 | 3.1.7 → latest | No fix stated |
| SIPLUS S7-1500 CPU 1518-4 PN/DP MFP 3.1 | 3.1.7 → latest | No fix stated |
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