CVE-2026-92494
CVE CVE-2026-92494EUVD EUVD-2026-82115Published 2026-09-17T16:10:10.000Z
What the advisory describes
In the Linux kernel, the following vulnerability has been resolved: ext4: fix buffer_head leak in ext4_init_orphan_info ext4_init_orphan_info() reads orphan file blocks with ext4_bread() and stores the returned buffer_head in oi->of_binfo[i].ob_bh. If ext4_bread() succeeds but the orphan block magic or checksum validation fails, the function jumps to out_free. However, the old out_free loop starts releasing buffers from i - 1, so the current buffer_head at index i is skipped. This leaks the buffer_head reference obtained by ext4_bread() on the bad magic and bad checksum error paths. Fix this by tracking the number of successfully read buffer_heads and releasing exactly those buffer_heads on the error path.
Source: EUVD (ENISA), in the words of the advisory.
Products the advisory names
These come from the advisory itself, not from any check we performed.
- Linux — Linux patch: 6.12.110; 02f310fcf47fa9311d6ba2946a8d19e7d7d11f37 <05704335803b69c1bfa8637b7ada942bf2ee8a41; 02f310fcf47fa9311d6ba2946a8d19e7d7d11f37 <e1e342d9a561c016b8531ec1f4dcefaad9d64954; patch: 6.6.157; 02f310fcf47fa9311d6ba2946a8d19e7d7d11f37 <1399f102d8a1855c1a38506057306ec79d0787d9; patch: 5.15.221; patch: 7.2.6; patch: 7.3-rc1; 02f310fcf47fa9311d6ba2946a8d19e7d7d11f37 <6ec53ccab0d691b3c73e03d930343ca45987e88d; 02f310fcf47fa9311d6ba2946a8d19e7d7d11f37 <a9a6ec1298f9bc134b2c5db27d25bb10603b7113; 02f310fcf47fa9311d6ba2946a8d19e7d7d11f37 <74637f7fef030e5fb2e835b7dfeb05efdc48e0fe; 02f310fcf47fa9311d6ba2946a8d19e7d7d11f37 <35fc83c65faf7949f5701bb34b20f822560a7718; 5.15; patch: 6.18.52; patch: 6.1.188; patch: 0
The versions shown are the advisory's own. Patchlage compares no version numbers and derives no judgement from them — which version is installed is something a person has to look up.
Carried in the product catalogue
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- Linux — Linux
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