CVE-2022-48647— sfc: fix TX channel offset when using legacy interrupts
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I. Basic Information for CVE-2022-48647
Vulnerability Information
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Vulnerability Title
sfc: fix TX channel offset when using legacy interrupts
Source: NVD (National Vulnerability Database)
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: sfc: fix TX channel offset when using legacy interrupts In legacy interrupt mode the tx_channel_offset was hardcoded to 1, but that's not correct if efx_sepparate_tx_channels is false. In that case, the offset is 0 because the tx queues are in the single existing channel at index 0, together with the rx queue. Without this fix, as soon as you try to send any traffic, it tries to get the tx queues from an uninitialized channel getting these errors: WARNING: CPU: 1 PID: 0 at drivers/net/ethernet/sfc/tx.c:540 efx_hard_start_xmit+0x12e/0x170 [sfc] [...] RIP: 0010:efx_hard_start_xmit+0x12e/0x170 [sfc] [...] Call Trace: <IRQ> dev_hard_start_xmit+0xd7/0x230 sch_direct_xmit+0x9f/0x360 __dev_queue_xmit+0x890/0xa40 [...] BUG: unable to handle kernel NULL pointer dereference at 0000000000000020 [...] RIP: 0010:efx_hard_start_xmit+0x153/0x170 [sfc] [...] Call Trace: <IRQ> dev_hard_start_xmit+0xd7/0x230 sch_direct_xmit+0x9f/0x360 __dev_queue_xmit+0x890/0xa40 [...]
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，该漏洞源于使用传统中断时 TX 通道会发生偏移。
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-2022-48647
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Same Patch Batch · Linux · 2024-04-28 · 40 CVEs total
| CVE-2022-48638 | cgroup: cgroup_get_from_id() must check the looked-up kn is a directory | |
| CVE-2022-48648 | sfc: fix null pointer dereference in efx_hard_start_xmit | |
| CVE-2022-48646 | sfc/siena: fix null pointer dereference in efx_hard_start_xmit | |
| CVE-2022-48645 | net: enetc: deny offload of tc-based TSN features on VF interfaces | |
| CVE-2022-48644 | net/sched: taprio: avoid disabling offload when it was never enabled | |
| CVE-2022-48643 | netfilter: nf_tables: fix nft_counters_enabled underflow at nf_tables_addchain() | |
| CVE-2022-48642 | netfilter: nf_tables: fix percpu memory leak at nf_tables_addchain() | |
| CVE-2022-48641 | netfilter: ebtables: fix memory leak when blob is malformed | |
| CVE-2022-48640 | bonding: fix NULL deref in bond_rr_gen_slave_id | |
| CVE-2022-48639 | net: sched: fix possible refcount leak in tc_new_tfilter() | |
| CVE-2022-48649 | mm/slab_common: fix possible double free of kmem_cache | |
| CVE-2022-48637 | bnxt: prevent skb UAF after handing over to PTP worker | |
| CVE-2022-48636 | s390/dasd: fix Oops in dasd_alias_get_start_dev due to missing pavgroup | |
| CVE-2022-48635 | fsdax: Fix infinite loop in dax_iomap_rw() | |
| CVE-2022-48634 | drm/gma500: Fix BUG: sleeping function called from invalid context errors | |
| CVE-2022-48633 | drm/gma500: Fix WARN_ON(lock->magic != lock) error | |
| CVE-2022-48632 | i2c: mlxbf: prevent stack overflow in mlxbf_i2c_smbus_start_transaction() | |
| CVE-2022-48631 | ext4: fix bug in extents parsing when eh_entries == 0 and eh_depth > 0 | |
| CVE-2024-26928 | smb: client: fix potential UAF in cifs_debug_files_proc_show() | |
| CVE-2024-26927 | ASoC: SOF: Add some bounds checking to firmware data |
Showing top 20 of 40 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-2022-48647
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