| 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-2024-44985: ipv6: prevent possible UAF in ip6_xmit() |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| ipv6: prevent possible UAF in ip6_xmit() |
| |
| If skb_expand_head() returns NULL, skb has been freed |
| and the associated dst/idev could also have been freed. |
| |
| We must use rcu_read_lock() to prevent a possible UAF. |
| |
| The Linux kernel CVE team has assigned CVE-2024-44985 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Issue introduced in 5.15 with commit 0c9f227bee11910a49e1d159abe102d06e3745d5 and fixed in 5.15.166 with commit 975f764e96f71616b530e300c1bb2ac0ce0c2596 |
| Issue introduced in 5.15 with commit 0c9f227bee11910a49e1d159abe102d06e3745d5 and fixed in 6.1.107 with commit 38a21c026ed2cc7232414cb166efc1923f34af17 |
| Issue introduced in 5.15 with commit 0c9f227bee11910a49e1d159abe102d06e3745d5 and fixed in 6.6.48 with commit 124b428fe28064c809e4237b0b38e97200a8a4a8 |
| Issue introduced in 5.15 with commit 0c9f227bee11910a49e1d159abe102d06e3745d5 and fixed in 6.10.7 with commit fc88d6c1f2895a5775795d82ec581afdff7661d1 |
| Issue introduced in 5.15 with commit 0c9f227bee11910a49e1d159abe102d06e3745d5 and fixed in 6.11 with commit 2d5ff7e339d04622d8282661df36151906d0e1c7 |
| |
| 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-2024-44985 |
| 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/ipv6/ip6_output.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/b3a3d5333c13a1be57499581eab4a8fc94d57f36 |
| https://git.kernel.org/stable/c/c47e022011719fc5727bca661d662303180535ba |
| https://git.kernel.org/stable/c/975f764e96f71616b530e300c1bb2ac0ce0c2596 |
| https://git.kernel.org/stable/c/38a21c026ed2cc7232414cb166efc1923f34af17 |
| https://git.kernel.org/stable/c/124b428fe28064c809e4237b0b38e97200a8a4a8 |
| https://git.kernel.org/stable/c/fc88d6c1f2895a5775795d82ec581afdff7661d1 |
| https://git.kernel.org/stable/c/2d5ff7e339d04622d8282661df36151906d0e1c7 |
