# CVE-2022-49869: linux: In the Linux kernel, the following vulnerability has been resolved:  bnxt_en: Fix possible crash in bnxt_hwrm_set_coa...

CVE-2022-49869 is fixed in linux on 1 platform, first by DEBIAN-CVE-2022-49869, released May 1, 2025. It is not reported as exploited. Patch Radar priority: Routine.

- Web page: https://patchblox.com/security/cve/CVE-2022-49869
- Priority: Routine
- CVSS: 5.5 (medium)
- EPSS: 0.0022
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: May 1, 2025

## Description

In the Linux kernel, the following vulnerability has been resolved:  bnxt_en: Fix possible crash in bnxt_hwrm_set_coal()  During the error recovery sequence, the rtnl_lock is not held for the entire duration and some datastructures may be freed during the sequence. Check for the BNXT_STATE_OPEN flag instead of netif_running() to ensure that the device is fully operational before proceeding to reconfigure the coalescing settings.  This will fix a possible crash like this:  BUG: unable to handle kernel NULL pointer dereference at 0000000000000000 PGD 0 P4D 0 Oops: 0000 [#1] SMP NOPTI CPU: 10 PID: 181276 Comm: ethtool Kdump: loaded Tainted: G          IOE    --------- -  - 4.18.0-348.el8.x86_64 #1 Hardware name: Dell Inc. PowerEdge R740/0F9N89, BIOS 2.3.10 08/15/2019 RIP: 0010:bnxt_hwrm_set_coal+0x1fb/0x2a0 [bnxt_en] Code: c2 66 83 4e 22 08 66 89 46 1c e8 10 cb 00 00 41 83 c6 01 44 39 b3 68 01 00 00 0f 8e a3 00 00 00 48 8b 93 c8 00 00 00 49 63 c6 <48> 8b 2c c2 48 8b 85 b8 02 00 00 48 85 c0 74 2e 48 8b 74 24 08 f6 RSP: 0018:ffffb11c8dcaba50 EFLAGS: 00010246 RAX: 0000000000000000 RBX: ffff8d168a8b0ac0 RCX: 00000000000000c5 RDX: 0000000000000000 RSI: ffff8d162f72c000 RDI: ffff8d168a8b0b28 RBP: 0000000000000000 R08: b6e1f68a12e9a7eb R09: 0000000000000000 R10: 0000000000000001 R11: 0000000000000037 R12: ffff8d168a8b109c R13: ffff8d168a8b10aa R14: 0000000000000000 R15: ffffffffc01ac4e0 FS:  00007f3852e4c740(0000) GS:ffff8d24c0080000(0000) knlGS:0000000000000000 CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000000 CR3: 000000041b3ee003 CR4: 00000000007706e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 PKRU: 55555554 Call Trace:  ethnl_set_coalesce+0x3ce/0x4c0  genl_family_rcv_msg_doit.isra.15+0x10f/0x150  genl_family_rcv_msg+0xb3/0x160  ? coalesce_fill_reply+0x480/0x480  genl_rcv_msg+0x47/0x90  ? genl_family_rcv_msg+0x160/0x160  netlink_rcv_skb+0x4c/0x120  genl_rcv+0x24/0x40  netlink_unicast+0x196/0x230  netlink_sendmsg+0x204/0x3d0  sock_sendmsg+0x4c/0x50  __sys_sendto+0xee/0x160  ? syscall_trace_enter+0x1d3/0x2c0  ? __audit_syscall_exit+0x249/0x2a0  __x64_sys_sendto+0x24/0x30  do_syscall_64+0x5b/0x1a0  entry_SYSCALL_64_after_hwframe+0x65/0xca RIP: 0033:0x7f38524163bb

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | linux Debian 12.15 (bookworm) | 6.0.10-1 | [DEBIAN-CVE-2022-49869](https://patchblox.com/security/data/fix/linux/debian-cve-2022-49869.md) | May 1, 2025 |
| Linux | linux Debian 13.5 (trixie) | 6.0.10-1 | [DEBIAN-CVE-2022-49869](https://patchblox.com/security/data/fix/linux/debian-cve-2022-49869.md) | May 1, 2025 |
| Linux | linux Debian 14 | 6.0.10-1 | [DEBIAN-CVE-2022-49869](https://patchblox.com/security/data/fix/linux/debian-cve-2022-49869.md) | May 1, 2025 |

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