CVE-2023-53105— net/mlx5e: Fix cleanup null-ptr deref on encap lock
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I. Basic Information for CVE-2023-53105
Vulnerability Information
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Vulnerability Title
net/mlx5e: Fix cleanup null-ptr deref on encap lock
Source: NVD (National Vulnerability Database)
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: net/mlx5e: Fix cleanup null-ptr deref on encap lock During module is unloaded while a peer tc flow is still offloaded, first the peer uplink rep profile is changed to a nic profile, and so neigh encap lock is destroyed. Next during unload, the VF reps netdevs are unregistered which causes the original non-peer tc flow to be deleted, which deletes the peer flow. The peer flow deletion detaches the encap entry and try to take the already destroyed encap lock, causing the below trace. Fix this by clearing peer flows during tc eswitch cleanup (mlx5e_tc_esw_cleanup()). Relevant trace: [ 4316.837128] BUG: kernel NULL pointer dereference, address: 00000000000001d8 [ 4316.842239] RIP: 0010:__mutex_lock+0xb5/0xc40 [ 4316.851897] Call Trace: [ 4316.852481] <TASK> [ 4316.857214] mlx5e_rep_neigh_entry_release+0x93/0x790 [mlx5_core] [ 4316.858258] mlx5e_rep_encap_entry_detach+0xa7/0xf0 [mlx5_core] [ 4316.859134] mlx5e_encap_dealloc+0xa3/0xf0 [mlx5_core] [ 4316.859867] clean_encap_dests.part.0+0x5c/0xe0 [mlx5_core] [ 4316.860605] mlx5e_tc_del_fdb_flow+0x32a/0x810 [mlx5_core] [ 4316.862609] __mlx5e_tc_del_fdb_peer_flow+0x1a2/0x250 [mlx5_core] [ 4316.863394] mlx5e_tc_del_flow+0x(/0x630 [mlx5_core] [ 4316.864090] mlx5e_flow_put+0x5f/0x100 [mlx5_core] [ 4316.864771] mlx5e_delete_flower+0x4de/0xa40 [mlx5_core] [ 4316.865486] tc_setup_cb_reoffload+0x20/0x80 [ 4316.865905] fl_reoffload+0x47c/0x510 [cls_flower] [ 4316.869181] tcf_block_playback_offloads+0x91/0x1d0 [ 4316.869649] tcf_block_unbind+0xe7/0x1b0 [ 4316.870049] tcf_block_offload_cmd.isra.0+0x1ee/0x270 [ 4316.879266] tcf_block_offload_unbind+0x61/0xa0 [ 4316.879711] __tcf_block_put+0xa4/0x310
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Title
Linux kernel 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Linux kernel是美国Linux基金会的开源操作系统Linux所使用的内核。 Linux kernel存在安全漏洞，该漏洞源于mlx5e驱动在封装锁清理时存在空指针解引用。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
II. Public POCs for CVE-2023-53105
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Same Patch Batch · Linux · 2025-05-02 · 107 CVEs total
| CVE-2023-53100 | ext4: fix WARNING in ext4_update_inline_data | |
| CVE-2023-53115 | scsi: mpi3mr: Fix memory leaks in mpi3mr_init_ioc() | |
| CVE-2023-53114 | i40e: Fix kernel crash during reboot when adapter is in recovery mode | |
| CVE-2023-53112 | drm/i915/sseu: fix max_subslices array-index-out-of-bounds access | |
| CVE-2023-53113 | wifi: nl80211: fix NULL-ptr deref in offchan check | |
| CVE-2023-53111 | loop: Fix use-after-free issues | |
| CVE-2023-53109 | net: tunnels: annotate lockless accesses to dev->needed_headroom | |
| CVE-2023-53110 | net/smc: fix NULL sndbuf_desc in smc_cdc_tx_handler() | |
| CVE-2023-53108 | net/iucv: Fix size of interrupt data | |
| CVE-2023-53106 | nfc: st-nci: Fix use after free bug in ndlc_remove due to race condition | |
| CVE-2023-53107 | veth: Fix use after free in XDP_REDIRECT | |
| CVE-2023-53103 | bonding: restore bond's IFF_SLAVE flag if a non-eth dev enslave fails | |
| CVE-2023-53101 | ext4: zero i_disksize when initializing the bootloader inode | |
| CVE-2023-53102 | ice: xsk: disable txq irq before flushing hw | |
| CVE-2023-53090 | drm/amdkfd: Fix an illegal memory access | |
| CVE-2023-53092 | interconnect: exynos: fix node leak in probe PM QoS error path | |
| CVE-2023-53093 | tracing: Do not let histogram values have some modifiers | |
| CVE-2023-53091 | ext4: update s_journal_inum if it changes after journal replay | |
| CVE-2023-53094 | tty: serial: fsl_lpuart: fix race on RX DMA shutdown | |
| CVE-2023-53089 | ext4: fix task hung in ext4_xattr_delete_inode |
Showing top 20 of 107 CVEs. View all on vendor page → →
IV. Related Vulnerabilities
Same product: Linux
- CVE-2026-43500
rxrpc: Also unshare DATA/RESPONSE packets when paged frags a - CVE-2026-43475
scsi: storvsc: Fix scheduling while atomic on PREEMPT_RT - CVE-2026-43474
fs: init flags_valid before calling vfs_fileattr_get - CVE-2026-43473
scsi: mpi3mr: Add NULL checks when resetting request and rep - CVE-2026-43472
unshare: fix unshare_fs() handling
Same vendor: Linux
- CVE-2026-43500
rxrpc: Also unshare DATA/RESPONSE packets when paged frags a - CVE-2026-43475
scsi: storvsc: Fix scheduling while atomic on PREEMPT_RT - CVE-2026-43474
fs: init flags_valid before calling vfs_fileattr_get - CVE-2026-43473
scsi: mpi3mr: Add NULL checks when resetting request and rep - CVE-2026-43472
unshare: fix unshare_fs() handling
V. Comments for CVE-2023-53105
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