| From bippy-1.2.0 Mon Sep 17 00:00:00 2001 |
| From: Greg Kroah-Hartman <gregkh@kernel.org> |
| To: <linux-cve-announce@vger.kernel.org> |
| Reply-to: <cve@kernel.org>, <linux-kernel@vger.kernel.org> |
| Subject: CVE-2025-22018: atm: Fix NULL pointer dereference |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| atm: Fix NULL pointer dereference |
| |
| When MPOA_cache_impos_rcvd() receives the msg, it can trigger |
| Null Pointer Dereference Vulnerability if both entry and |
| holding_time are NULL. Because there is only for the situation |
| where entry is NULL and holding_time exists, it can be passed |
| when both entry and holding_time are NULL. If these are NULL, |
| the entry will be passd to eg_cache_put() as parameter and |
| it is referenced by entry->use code in it. |
| |
| kasan log: |
| |
| [ 3.316691] Oops: general protection fault, probably for non-canonical address 0xdffffc0000000006:I |
| [ 3.317568] KASAN: null-ptr-deref in range [0x0000000000000030-0x0000000000000037] |
| [ 3.318188] CPU: 3 UID: 0 PID: 79 Comm: ex Not tainted 6.14.0-rc2 #102 |
| [ 3.318601] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.15.0-1 04/01/2014 |
| [ 3.319298] RIP: 0010:eg_cache_remove_entry+0xa5/0x470 |
| [ 3.319677] Code: c1 f7 6e fd 48 c7 c7 00 7e 38 b2 e8 95 64 54 fd 48 c7 c7 40 7e 38 b2 48 89 ee e80 |
| [ 3.321220] RSP: 0018:ffff88800583f8a8 EFLAGS: 00010006 |
| [ 3.321596] RAX: 0000000000000006 RBX: ffff888005989000 RCX: ffffffffaecc2d8e |
| [ 3.322112] RDX: 0000000000000000 RSI: 0000000000000004 RDI: 0000000000000030 |
| [ 3.322643] RBP: 0000000000000000 R08: 0000000000000000 R09: fffffbfff6558b88 |
| [ 3.323181] R10: 0000000000000003 R11: 203a207972746e65 R12: 1ffff11000b07f15 |
| [ 3.323707] R13: dffffc0000000000 R14: ffff888005989000 R15: ffff888005989068 |
| [ 3.324185] FS: 000000001b6313c0(0000) GS:ffff88806d380000(0000) knlGS:0000000000000000 |
| [ 3.325042] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 |
| [ 3.325545] CR2: 00000000004b4b40 CR3: 000000000248e000 CR4: 00000000000006f0 |
| [ 3.326430] Call Trace: |
| [ 3.326725] <TASK> |
| [ 3.326927] ? die_addr+0x3c/0xa0 |
| [ 3.327330] ? exc_general_protection+0x161/0x2a0 |
| [ 3.327662] ? asm_exc_general_protection+0x26/0x30 |
| [ 3.328214] ? vprintk_emit+0x15e/0x420 |
| [ 3.328543] ? eg_cache_remove_entry+0xa5/0x470 |
| [ 3.328910] ? eg_cache_remove_entry+0x9a/0x470 |
| [ 3.329294] ? __pfx_eg_cache_remove_entry+0x10/0x10 |
| [ 3.329664] ? console_unlock+0x107/0x1d0 |
| [ 3.329946] ? __pfx_console_unlock+0x10/0x10 |
| [ 3.330283] ? do_syscall_64+0xa6/0x1a0 |
| [ 3.330584] ? entry_SYSCALL_64_after_hwframe+0x47/0x7f |
| [ 3.331090] ? __pfx_prb_read_valid+0x10/0x10 |
| [ 3.331395] ? down_trylock+0x52/0x80 |
| [ 3.331703] ? vprintk_emit+0x15e/0x420 |
| [ 3.331986] ? __pfx_vprintk_emit+0x10/0x10 |
| [ 3.332279] ? down_trylock+0x52/0x80 |
| [ 3.332527] ? _printk+0xbf/0x100 |
| [ 3.332762] ? __pfx__printk+0x10/0x10 |
| [ 3.333007] ? _raw_write_lock_irq+0x81/0xe0 |
| [ 3.333284] ? __pfx__raw_write_lock_irq+0x10/0x10 |
| [ 3.333614] msg_from_mpoad+0x1185/0x2750 |
| [ 3.333893] ? __build_skb_around+0x27b/0x3a0 |
| [ 3.334183] ? __pfx_msg_from_mpoad+0x10/0x10 |
| [ 3.334501] ? __alloc_skb+0x1c0/0x310 |
| [ 3.334809] ? __pfx___alloc_skb+0x10/0x10 |
| [ 3.335283] ? _raw_spin_lock+0xe0/0xe0 |
| [ 3.335632] ? finish_wait+0x8d/0x1e0 |
| [ 3.335975] vcc_sendmsg+0x684/0xba0 |
| [ 3.336250] ? __pfx_vcc_sendmsg+0x10/0x10 |
| [ 3.336587] ? __pfx_autoremove_wake_function+0x10/0x10 |
| [ 3.337056] ? fdget+0x176/0x3e0 |
| [ 3.337348] __sys_sendto+0x4a2/0x510 |
| [ 3.337663] ? __pfx___sys_sendto+0x10/0x10 |
| [ 3.337969] ? ioctl_has_perm.constprop.0.isra.0+0x284/0x400 |
| [ 3.338364] ? sock_ioctl+0x1bb/0x5a0 |
| [ 3.338653] ? __rseq_handle_notify_resume+0x825/0xd20 |
| [ 3.339017] ? __pfx_sock_ioctl+0x10/0x10 |
| [ 3.339316] ? __pfx___rseq_handle_notify_resume+0x10/0x10 |
| [ 3.339727] ? selinux_file_ioctl+0xa4/0x260 |
| [ 3.340166] __x64_sys_sendto+0xe0/0x1c0 |
| [ 3.340526] ? syscall_exit_to_user_mode+0x123/0x140 |
| [ 3.340898] do_syscall_64+0xa6/0x1a0 |
| [ 3.341170] entry_SYSCALL_64_after_hwframe+0x77/0x7f |
| [ 3.341533] RIP: 0033:0x44a380 |
| [ 3.341757] Code: 0f 1f 84 00 00 00 00 00 66 90 f3 0f 1e fa 41 89 ca 64 8b 04 25 18 00 00 00 85 c00 |
| [ 3.343078] RSP: 002b:00007ffc1d404098 EFLAGS: 00000246 ORIG_RAX: 000000000000002c |
| [ 3.343631] RAX: ffffffffffffffda RBX: 00007ffc1d404458 RCX: 000000000044a380 |
| [ 3.344306] RDX: 000000000000019c RSI: 00007ffc1d4040b0 RDI: 0000000000000003 |
| [ 3.344833] RBP: 00007ffc1d404260 R08: 0000000000000000 R09: 0000000000000000 |
| [ 3.345381] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 |
| [ 3.346015] R13: 00007ffc1d404448 R14: 00000000004c17d0 R15: 0000000000000001 |
| [ 3.346503] </TASK> |
| [ 3.346679] Modules linked in: |
| [ 3.346956] ---[ end trace 0000000000000000 ]--- |
| [ 3.347315] RIP: 0010:eg_cache_remove_entry+0xa5/0x470 |
| [ 3.347737] Code: c1 f7 6e fd 48 c7 c7 00 7e 38 b2 e8 95 64 54 fd 48 c7 c7 40 7e 38 b2 48 89 ee e80 |
| [ 3.349157] RSP: 0018:ffff88800583f8a8 EFLAGS: 00010006 |
| [ 3.349517] RAX: 0000000000000006 RBX: ffff888005989000 RCX: ffffffffaecc2d8e |
| [ 3.350103] RDX: 0000000000000000 RSI: 0000000000000004 RDI: 0000000000000030 |
| [ 3.350610] RBP: 0000000000000000 R08: 0000000000000000 R09: fffffbfff6558b88 |
| [ 3.351246] R10: 0000000000000003 R11: 203a207972746e65 R12: 1ffff11000b07f15 |
| [ 3.351785] R13: dffffc0000000000 R14: ffff888005989000 R15: ffff888005989068 |
| [ 3.352404] FS: 000000001b6313c0(0000) GS:ffff88806d380000(0000) knlGS:0000000000000000 |
| [ 3.353099] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 |
| [ 3.353544] CR2: 00000000004b4b40 CR3: 000000000248e000 CR4: 00000000000006f0 |
| [ 3.354072] note: ex[79] exited with irqs disabled |
| [ 3.354458] note: ex[79] exited with preempt_count 1 |
| |
| The Linux kernel CVE team has assigned CVE-2025-22018 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Issue introduced in 2.6.12 with commit 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 and fixed in 5.4.292 with commit ab92f51c7f53a08f1a686bfb80690ebb3672357d |
| Issue introduced in 2.6.12 with commit 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 and fixed in 5.10.236 with commit 1505f9b720656b17865e4166ab002960162bf679 |
| Issue introduced in 2.6.12 with commit 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 and fixed in 5.15.180 with commit d7f1e4a53a51cc6ba833afcb40439f18dab61c1f |
| Issue introduced in 2.6.12 with commit 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 and fixed in 6.1.133 with commit 0ef6e49881b6b50ac454cb9d6501d009fdceb6fc |
| Issue introduced in 2.6.12 with commit 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 and fixed in 6.6.86 with commit 9da6b6340dbcf0f60ae3ec6a7d6438337c32518a |
| Issue introduced in 2.6.12 with commit 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 and fixed in 6.12.22 with commit 09691f367df44fe93255274d80a439f9bb3263fc |
| Issue introduced in 2.6.12 with commit 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 and fixed in 6.13.10 with commit 3c23bb2c894e9ef2727682f98c341b20f78c9013 |
| Issue introduced in 2.6.12 with commit 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 and fixed in 6.14.1 with commit 14c7aca5ba2740973de27c1bb8df77b4dcb6f775 |
| Issue introduced in 2.6.12 with commit 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 and fixed in 6.15 with commit bf2986fcf82a449441f9ee4335df19be19e83970 |
| |
| 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-2025-22018 |
| 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/atm/mpc.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/ab92f51c7f53a08f1a686bfb80690ebb3672357d |
| https://git.kernel.org/stable/c/1505f9b720656b17865e4166ab002960162bf679 |
| https://git.kernel.org/stable/c/d7f1e4a53a51cc6ba833afcb40439f18dab61c1f |
| https://git.kernel.org/stable/c/0ef6e49881b6b50ac454cb9d6501d009fdceb6fc |
| https://git.kernel.org/stable/c/9da6b6340dbcf0f60ae3ec6a7d6438337c32518a |
| https://git.kernel.org/stable/c/09691f367df44fe93255274d80a439f9bb3263fc |
| https://git.kernel.org/stable/c/3c23bb2c894e9ef2727682f98c341b20f78c9013 |
| https://git.kernel.org/stable/c/14c7aca5ba2740973de27c1bb8df77b4dcb6f775 |
| https://git.kernel.org/stable/c/bf2986fcf82a449441f9ee4335df19be19e83970 |
