Goal Reached Thanks to every supporter — we hit 100%!

Goal: 1000 CNY · Raised: 1000 CNY

100.0%
Buy Us a Coffee

CVE-2026-22993— idpf: Fix RSS LUT NULL ptr issue after soft reset

EPSS 0.02% · P5
Get alerts for future matching vulnerabilitiesLog in to subscribe

I. Basic Information for CVE-2026-22993

Vulnerability Information
Have questions about the vulnerability? See if Shenlong's analysis helps!
View Shenlong Deep Dive ↗

Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.

Vulnerability Title
idpf: Fix RSS LUT NULL ptr issue after soft reset
Source: NVD (National Vulnerability Database)
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: idpf: Fix RSS LUT NULL ptr issue after soft reset During soft reset, the RSS LUT is freed and not restored unless the interface is up. If an ethtool command that accesses the rss lut is attempted immediately after reset, it will result in NULL ptr dereference. Also, there is no need to reset the rss lut if the soft reset does not involve queue count change. After soft reset, set the RSS LUT to default values based on the updated queue count only if the reset was a result of a queue count change and the LUT was not configured by the user. In all other cases, don't touch the LUT. Steps to reproduce: ** Bring the interface down (if up) ifconfig eth1 down ** update the queue count (eg., 27->20) ethtool -L eth1 combined 20 ** display the RSS LUT ethtool -x eth1 [82375.558338] BUG: kernel NULL pointer dereference, address: 0000000000000000 [82375.558373] #PF: supervisor read access in kernel mode [82375.558391] #PF: error_code(0x0000) - not-present page [82375.558408] PGD 0 P4D 0 [82375.558421] Oops: Oops: 0000 [#1] SMP NOPTI <snip> [82375.558516] RIP: 0010:idpf_get_rxfh+0x108/0x150 [idpf] [82375.558786] Call Trace: [82375.558793] <TASK> [82375.558804] rss_prepare.isra.0+0x187/0x2a0 [82375.558827] rss_prepare_data+0x3a/0x50 [82375.558845] ethnl_default_doit+0x13d/0x3e0 [82375.558863] genl_family_rcv_msg_doit+0x11f/0x180 [82375.558886] genl_rcv_msg+0x1ad/0x2b0 [82375.558902] ? __pfx_ethnl_default_doit+0x10/0x10 [82375.558920] ? __pfx_genl_rcv_msg+0x10/0x10 [82375.558937] netlink_rcv_skb+0x58/0x100 [82375.558957] genl_rcv+0x2c/0x50 [82375.558971] netlink_unicast+0x289/0x3e0 [82375.558988] netlink_sendmsg+0x215/0x440 [82375.559005] __sys_sendto+0x234/0x240 [82375.559555] __x64_sys_sendto+0x28/0x30 [82375.560068] x64_sys_call+0x1909/0x1da0 [82375.560576] do_syscall_64+0x7a/0xfa0 [82375.561076] ? clear_bhb_loop+0x60/0xb0 [82375.561567] entry_SYSCALL_64_after_hwframe+0x76/0x7e <snip>
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RSS LUT空指针问题，可能导致空指针取消引用。
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

VendorProductAffected VersionsCPESubscribe
LinuxLinux 02cbfba1add5bd9088c7d14c6b93b77a6ea8f3bb ~ a09380354d2f14759b9dd45de1bc2f6bf49e651b -
LinuxLinux 6.7 -

II. Public POCs for CVE-2026-22993

#POC DescriptionSource LinkShenlong Link
AI-Generated POCPremium

No public POC found.

Login to generate AI POC

III. Intelligence Information for CVE-2026-22993

请登录查看更多情报信息。

Same Patch Batch · Linux · 2026-01-23 · 34 CVEs total

CVE-2026-229849.8 CRITICALlibceph: prevent potential out-of-bounds reads in handle_auth_done()
CVE-2026-229807.8 HIGHnfsd: provide locking for v4_end_grace
CVE-2026-229887.8 HIGHarp: do not assume dev_hard_header() does not change skb->head
CVE-2026-229927.5 HIGHlibceph: return the handler error from mon_handle_auth_done()
CVE-2026-229917.5 HIGHlibceph: make free_choose_arg_map() resilient to partial allocation
CVE-2026-229907.5 HIGHlibceph: replace overzealous BUG_ON in osdmap_apply_incremental()
CVE-2026-22987net/sched: act_api: avoid dereferencing ERR_PTR in tcf_idrinfo_destroy
CVE-2026-22979net: fix memory leak in skb_segment_list for GRO packets
CVE-2026-22981idpf: detach and close netdevs while handling a reset
CVE-2026-22982net: mscc: ocelot: Fix crash when adding interface under a lag
CVE-2026-22983net: do not write to msg_get_inq in callee
CVE-2026-22985idpf: Fix RSS LUT NULL pointer crash on early ethtool operations
CVE-2026-22986gpiolib: fix race condition for gdev->srcu
CVE-2026-22978wifi: avoid kernel-infoleak from struct iw_point
CVE-2026-22989nfsd: check that server is running in unlock_filesystem
CVE-2026-22994bpf: Fix reference count leak in bpf_prog_test_run_xdp()
CVE-2026-22995ublk: fix use-after-free in ublk_partition_scan_work
CVE-2025-71145usb: phy: isp1301: fix non-OF device reference imbalance
CVE-2025-71161dm-verity: disable recursive forward error correction
CVE-2025-71160netfilter: nf_tables: avoid chain re-validation if possible

Showing top 20 of 34 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2026-22993

No comments yet

Leave a comment