| 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-2023-53032: netfilter: ipset: Fix overflow before widen in the bitmap_ip_create() function. |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| netfilter: ipset: Fix overflow before widen in the bitmap_ip_create() function. |
| |
| When first_ip is 0, last_ip is 0xFFFFFFFF, and netmask is 31, the value of |
| an arithmetic expression 2 << (netmask - mask_bits - 1) is subject |
| to overflow due to a failure casting operands to a larger data type |
| before performing the arithmetic. |
| |
| Note that it's harmless since the value will be checked at the next step. |
| |
| Found by InfoTeCS on behalf of Linux Verification Center |
| (linuxtesting.org) with SVACE. |
| |
| The Linux kernel CVE team has assigned CVE-2023-53032 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Issue introduced in 3.7 with commit b9fed748185a96b7cfe74afac4bd228e8af16f01 and fixed in 4.14.303 with commit e137d9bb26bd85ce07323a38e38ceb0b160db841 |
| Issue introduced in 3.7 with commit b9fed748185a96b7cfe74afac4bd228e8af16f01 and fixed in 4.19.270 with commit dfd834ccc1b88bbbab81b9046a3a539dd0c2d14f |
| Issue introduced in 3.7 with commit b9fed748185a96b7cfe74afac4bd228e8af16f01 and fixed in 5.4.229 with commit feefb33eefa166fc3e0fd17547b0bc0cb3baced9 |
| Issue introduced in 3.7 with commit b9fed748185a96b7cfe74afac4bd228e8af16f01 and fixed in 5.10.164 with commit 4e6a70fd840400e3a2e784a6673968a3eb2431c0 |
| Issue introduced in 3.7 with commit b9fed748185a96b7cfe74afac4bd228e8af16f01 and fixed in 5.15.89 with commit 511cf17b2447fc41cfef8d71936e1fa53e395c1e |
| Issue introduced in 3.7 with commit b9fed748185a96b7cfe74afac4bd228e8af16f01 and fixed in 6.1.7 with commit e88865876d47c790be0d5e23973499d75d034364 |
| Issue introduced in 3.7 with commit b9fed748185a96b7cfe74afac4bd228e8af16f01 and fixed in 6.2 with commit 9ea4b476cea1b7d461d16dda25ca3c7e616e2d15 |
| |
| 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-2023-53032 |
| 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: |
| net/netfilter/ipset/ip_set_bitmap_ip.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/e137d9bb26bd85ce07323a38e38ceb0b160db841 |
| https://git.kernel.org/stable/c/dfd834ccc1b88bbbab81b9046a3a539dd0c2d14f |
| https://git.kernel.org/stable/c/feefb33eefa166fc3e0fd17547b0bc0cb3baced9 |
| https://git.kernel.org/stable/c/4e6a70fd840400e3a2e784a6673968a3eb2431c0 |
| https://git.kernel.org/stable/c/511cf17b2447fc41cfef8d71936e1fa53e395c1e |
| https://git.kernel.org/stable/c/e88865876d47c790be0d5e23973499d75d034364 |
| https://git.kernel.org/stable/c/9ea4b476cea1b7d461d16dda25ca3c7e616e2d15 |
