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CVE-2022-48647— sfc: fix TX channel offset when using legacy interrupts

Quick assessment

Affected
Linux Linux
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

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。

AI Predicted 4.3 Difficulty: Trivial EPSS 0.23% · P12

Possible ATT&CK Techniques 1 AI

T1499 · Endpoint Denial of Service

Affected Version Matrix 16

VendorProduct Version RangeStatus
Linux Linux bf2af9b24313553f3f0b30443220ab0ac8595d2d< b4afd3878f961d3517f27b3213730fceef77945c affected
06cb7e134f8f4a11b66f1dbeb5f237412a0aeedc< 360910b88d1466a90644a4e0533803b594344a2b affected
c308dfd1b43ef0d4c3e57b741bb3462eb7a7f4a2< 5f623a77cfc2d501d72bcb4f9ee71721e6c766ff affected
c308dfd1b43ef0d4c3e57b741bb3462eb7a7f4a2< f232af4295653afa4ade3230462b3be15ad16419 affected
1a7c0b3ef93d1d1dae7b0a85dab3ac6e3ad0ef61 affected
b2d60329a0b88c4e35017436ee29c43be59d46a5 affected
5.10.122< 5.10.146 affected
5.15.47< 5.15.71 affected
… +8 more rows
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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: CVE Program / CVE List V5
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: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
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

Vendor Product Affected Versions CPE Subscribe
Linux Linux bf2af9b24313553f3f0b30443220ab0ac8595d2d ~ b4afd3878f961d3517f27b3213730fceef77945c -
Linux Linux 5.19 -

II. Public POCs for CVE-2022-48647

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III. Intelligence Information for CVE-2022-48647

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Other References for CVE-2022-48647 (4)

Same Patch Batch · Linux · 2024-04-28 · 40 CVEs total

CVE-2022-48666 9.8 CRITICAL scsi: core: Fix a use-after-free
CVE-2022-48652 8.8 HIGH ice: Fix crash by keep old cfg when update TCs more than queues
CVE-2022-48632 7.8 HIGH i2c: mlxbf: prevent stack overflow in mlxbf_i2c_smbus_start_transaction()
CVE-2022-48636 7.8 HIGH s390/dasd: fix Oops in dasd_alias_get_start_dev due to missing pavgroup
CVE-2022-48637 7.8 HIGH bnxt: prevent skb UAF after handing over to PTP worker
CVE-2022-48658 7.5 HIGH mm: slub: fix flush_cpu_slab()/__free_slab() invocations in task context.
CVE-2022-48665 7.1 HIGH exfat: fix overflow for large capacity partition
CVE-2022-48654 7.1 HIGH netfilter: nfnetlink_osf: fix possible bogus match in nf_osf_find()
CVE-2022-48644 net/sched: taprio: avoid disabling offload when it was never enabled
CVE-2022-48649 mm/slab_common: fix possible double free of kmem_cache
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-2022-48638 cgroup: cgroup_get_from_id() must check the looked-up kn is a directory
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-2022-48631 ext4: fix bug in extents parsing when eh_entries == 0 and eh_depth > 0

Showing top 20 of 40 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

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