| 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-2024-26754: gtp: fix use-after-free and null-ptr-deref in gtp_genl_dump_pdp() |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| gtp: fix use-after-free and null-ptr-deref in gtp_genl_dump_pdp() |
| |
| The gtp_net_ops pernet operations structure for the subsystem must be |
| registered before registering the generic netlink family. |
| |
| Syzkaller hit 'general protection fault in gtp_genl_dump_pdp' bug: |
| |
| general protection fault, probably for non-canonical address |
| 0xdffffc0000000002: 0000 [#1] PREEMPT SMP KASAN NOPTI |
| KASAN: null-ptr-deref in range [0x0000000000000010-0x0000000000000017] |
| CPU: 1 PID: 5826 Comm: gtp Not tainted 6.8.0-rc3-std-def-alt1 #1 |
| Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.0-alt1 04/01/2014 |
| RIP: 0010:gtp_genl_dump_pdp+0x1be/0x800 [gtp] |
| Code: c6 89 c6 e8 64 e9 86 df 58 45 85 f6 0f 85 4e 04 00 00 e8 c5 ee 86 |
| df 48 8b 54 24 18 48 b8 00 00 00 00 00 fc ff df 48 c1 ea 03 <80> |
| 3c 02 00 0f 85 de 05 00 00 48 8b 44 24 18 4c 8b 30 4c 39 f0 74 |
| RSP: 0018:ffff888014107220 EFLAGS: 00010202 |
| RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 0000000000000000 |
| RDX: 0000000000000002 RSI: 0000000000000000 RDI: 0000000000000000 |
| RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 |
| R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 |
| R13: ffff88800fcda588 R14: 0000000000000001 R15: 0000000000000000 |
| FS: 00007f1be4eb05c0(0000) GS:ffff88806ce80000(0000) knlGS:0000000000000000 |
| CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 |
| CR2: 00007f1be4e766cf CR3: 000000000c33e000 CR4: 0000000000750ef0 |
| PKRU: 55555554 |
| Call Trace: |
| <TASK> |
| ? show_regs+0x90/0xa0 |
| ? die_addr+0x50/0xd0 |
| ? exc_general_protection+0x148/0x220 |
| ? asm_exc_general_protection+0x22/0x30 |
| ? gtp_genl_dump_pdp+0x1be/0x800 [gtp] |
| ? __alloc_skb+0x1dd/0x350 |
| ? __pfx___alloc_skb+0x10/0x10 |
| genl_dumpit+0x11d/0x230 |
| netlink_dump+0x5b9/0xce0 |
| ? lockdep_hardirqs_on_prepare+0x253/0x430 |
| ? __pfx_netlink_dump+0x10/0x10 |
| ? kasan_save_track+0x10/0x40 |
| ? __kasan_kmalloc+0x9b/0xa0 |
| ? genl_start+0x675/0x970 |
| __netlink_dump_start+0x6fc/0x9f0 |
| genl_family_rcv_msg_dumpit+0x1bb/0x2d0 |
| ? __pfx_genl_family_rcv_msg_dumpit+0x10/0x10 |
| ? genl_op_from_small+0x2a/0x440 |
| ? cap_capable+0x1d0/0x240 |
| ? __pfx_genl_start+0x10/0x10 |
| ? __pfx_genl_dumpit+0x10/0x10 |
| ? __pfx_genl_done+0x10/0x10 |
| ? security_capable+0x9d/0xe0 |
| |
| The Linux kernel CVE team has assigned CVE-2024-26754 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Issue introduced in 4.7 with commit 459aa660eb1d8ce67080da1983bb81d716aa5a69 and fixed in 4.19.308 with commit f0ecdfa679189d26aedfe24212d4e69e42c2c861 |
| Issue introduced in 4.7 with commit 459aa660eb1d8ce67080da1983bb81d716aa5a69 and fixed in 5.4.270 with commit f8cbd1791900b5d96466eede8e9439a5b9ca4de7 |
| Issue introduced in 4.7 with commit 459aa660eb1d8ce67080da1983bb81d716aa5a69 and fixed in 5.10.211 with commit 2e534fd15e5c2ca15821c897352cf0e8a3e30dca |
| Issue introduced in 4.7 with commit 459aa660eb1d8ce67080da1983bb81d716aa5a69 and fixed in 5.15.150 with commit a576308800be28f2eaa099e7caad093b97d66e77 |
| Issue introduced in 4.7 with commit 459aa660eb1d8ce67080da1983bb81d716aa5a69 and fixed in 6.1.80 with commit 3963f16cc7643b461271989b712329520374ad2a |
| Issue introduced in 4.7 with commit 459aa660eb1d8ce67080da1983bb81d716aa5a69 and fixed in 6.6.19 with commit ba6b8b02a3314e62571a540efa96560888c5f03e |
| Issue introduced in 4.7 with commit 459aa660eb1d8ce67080da1983bb81d716aa5a69 and fixed in 6.7.7 with commit 5013bd54d283eda5262c9ae3bcc966d01daf8576 |
| Issue introduced in 4.7 with commit 459aa660eb1d8ce67080da1983bb81d716aa5a69 and fixed in 6.8 with commit 136cfaca22567a03bbb3bf53a43d8cb5748b80ec |
| |
| 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-2024-26754 |
| 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: |
| drivers/net/gtp.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/f0ecdfa679189d26aedfe24212d4e69e42c2c861 |
| https://git.kernel.org/stable/c/f8cbd1791900b5d96466eede8e9439a5b9ca4de7 |
| https://git.kernel.org/stable/c/2e534fd15e5c2ca15821c897352cf0e8a3e30dca |
| https://git.kernel.org/stable/c/a576308800be28f2eaa099e7caad093b97d66e77 |
| https://git.kernel.org/stable/c/3963f16cc7643b461271989b712329520374ad2a |
| https://git.kernel.org/stable/c/ba6b8b02a3314e62571a540efa96560888c5f03e |
| https://git.kernel.org/stable/c/5013bd54d283eda5262c9ae3bcc966d01daf8576 |
| https://git.kernel.org/stable/c/136cfaca22567a03bbb3bf53a43d8cb5748b80ec |
