| From bippy-5f407fcff5a0 Mon Sep 17 00:00:00 2001 |
| From: Greg Kroah-Hartman <gregkh@linuxfoundation.org> |
| To: <linux-cve-announce@vger.kernel.org> |
| Reply-to: <cve@kernel.org>, <linux-kernel@vger.kernel.org> |
| Subject: CVE-2024-47757: nilfs2: fix potential oob read in nilfs_btree_check_delete() |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| nilfs2: fix potential oob read in nilfs_btree_check_delete() |
| |
| The function nilfs_btree_check_delete(), which checks whether degeneration |
| to direct mapping occurs before deleting a b-tree entry, causes memory |
| access outside the block buffer when retrieving the maximum key if the |
| root node has no entries. |
| |
| This does not usually happen because b-tree mappings with 0 child nodes |
| are never created by mkfs.nilfs2 or nilfs2 itself. However, it can happen |
| if the b-tree root node read from a device is configured that way, so fix |
| this potential issue by adding a check for that case. |
| |
| The Linux kernel CVE team has assigned CVE-2024-47757 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Issue introduced in 2.6.30 with commit 17c76b0104e4a6513983777e1a17e0297a12b0c4 and fixed in 4.19.323 with commit f3a9859767c7aea758976f5523903d247e585129 |
| Issue introduced in 2.6.30 with commit 17c76b0104e4a6513983777e1a17e0297a12b0c4 and fixed in 5.4.285 with commit ed76d381dae125b81d09934e365391a656249da8 |
| Issue introduced in 2.6.30 with commit 17c76b0104e4a6513983777e1a17e0297a12b0c4 and fixed in 5.10.227 with commit d20674f31626e0596ae4c1d9401dfb6739b81b58 |
| Issue introduced in 2.6.30 with commit 17c76b0104e4a6513983777e1a17e0297a12b0c4 and fixed in 5.15.168 with commit c4f8554996e8ada3be872dfb8f60e93bcf15fb27 |
| Issue introduced in 2.6.30 with commit 17c76b0104e4a6513983777e1a17e0297a12b0c4 and fixed in 6.1.113 with commit a8abfda768b9f33630cfbc4af6c4214f1e5681b0 |
| Issue introduced in 2.6.30 with commit 17c76b0104e4a6513983777e1a17e0297a12b0c4 and fixed in 6.6.54 with commit 257f9e5185eb6de83377caea686c306e22e871f2 |
| Issue introduced in 2.6.30 with commit 17c76b0104e4a6513983777e1a17e0297a12b0c4 and fixed in 6.10.13 with commit a33e967b681e088a125b979975c93e3453e686cd |
| Issue introduced in 2.6.30 with commit 17c76b0104e4a6513983777e1a17e0297a12b0c4 and fixed in 6.11.2 with commit c4cbcc64bb31e67e02940ce060cc77f7180564cf |
| Issue introduced in 2.6.30 with commit 17c76b0104e4a6513983777e1a17e0297a12b0c4 and fixed in 6.12 with commit f9c96351aa6718b42a9f42eaf7adce0356bdb5e8 |
| |
| Please see https://www.kernel.org for a full list of currently supported |
| kernel versions by the kernel community. |
| |
| Unaffected versions might change over time as fixes are backported to |
| older supported kernel versions. The official CVE entry at |
| https://cve.org/CVERecord/?id=CVE-2024-47757 |
| will be updated if fixes are backported, please check that for the most |
| up to date information about this issue. |
| |
| |
| Affected files |
| ============== |
| |
| The file(s) affected by this issue are: |
| fs/nilfs2/btree.c |
| |
| |
| Mitigation |
| ========== |
| |
| The Linux kernel CVE team recommends that you update to the latest |
| stable kernel version for this, and many other bugfixes. Individual |
| changes are never tested alone, but rather are part of a larger kernel |
| release. Cherry-picking individual commits is not recommended or |
| supported by the Linux kernel community at all. If however, updating to |
| the latest release is impossible, the individual changes to resolve this |
| issue can be found at these commits: |
| https://git.kernel.org/stable/c/f3a9859767c7aea758976f5523903d247e585129 |
| https://git.kernel.org/stable/c/ed76d381dae125b81d09934e365391a656249da8 |
| https://git.kernel.org/stable/c/d20674f31626e0596ae4c1d9401dfb6739b81b58 |
| https://git.kernel.org/stable/c/c4f8554996e8ada3be872dfb8f60e93bcf15fb27 |
| https://git.kernel.org/stable/c/a8abfda768b9f33630cfbc4af6c4214f1e5681b0 |
| https://git.kernel.org/stable/c/257f9e5185eb6de83377caea686c306e22e871f2 |
| https://git.kernel.org/stable/c/a33e967b681e088a125b979975c93e3453e686cd |
| https://git.kernel.org/stable/c/c4cbcc64bb31e67e02940ce060cc77f7180564cf |
| https://git.kernel.org/stable/c/f9c96351aa6718b42a9f42eaf7adce0356bdb5e8 |
