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

AI Predicted 7.8 Difficulty: Moderate EPSS 0.11% · P2

Possible ATT&CK Techniques 1AI

T1083 · File and Directory Discovery

Affected Version Matrix 8

VendorProductVersion RangeStatus
LinuxLinux02cbfba1add5bd9088c7d14c6b93b77a6ea8f3bb< a09380354d2f14759b9dd45de1bc2f6bf49e651baffected
02cbfba1add5bd9088c7d14c6b93b77a6ea8f3bb< ab92fa4dd81beaaed4e93a851f7a37c9b2d9776faffected
02cbfba1add5bd9088c7d14c6b93b77a6ea8f3bb< ebecca5b093895da801b3eba1a55b4ec4027d196affected
6.7affected
< 6.7unaffected
6.12.80≤ 6.12.*unaffected
6.18.6≤ 6.18.*unaffected
6.19≤ *unaffected
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I. Basic Information for CVE-2026-22993

Vulnerability Information
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Vulnerability Title
idpf: Fix RSS LUT NULL ptr issue after soft reset
Source: CVE Program / CVE List V5
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: 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

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III. Intelligence Information for CVE-2026-22993

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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-2025-711599.8 CRITICALbtrfs: fix use-after-free warning in btrfs_get_or_create_delayed_node()
CVE-2026-229807.8 HIGHnfsd: provide locking for v4_end_grace
CVE-2025-711457.8 HIGHusb: phy: isp1301: fix non-OF device reference imbalance
CVE-2025-711587.8 HIGHgpio: mpsse: ensure worker is torn down
CVE-2026-229887.8 HIGHarp: do not assume dev_hard_header() does not change skb->head
CVE-2025-711557.8 HIGHKVM: s390: Fix gmap_helper_zap_one_page() again
CVE-2025-711467.5 HIGHnetfilter: nf_conncount: fix leaked ct in error paths
CVE-2025-711617.5 HIGHdm-verity: disable recursive forward error correction
CVE-2026-229907.5 HIGHlibceph: replace overzealous BUG_ON in osdmap_apply_incremental()
CVE-2026-229917.5 HIGHlibceph: make free_choose_arg_map() resilient to partial allocation
CVE-2026-229927.5 HIGHlibceph: return the handler error from mon_handle_auth_done()
CVE-2025-711507.5 HIGHksmbd: Fix refcount leak when invalid session is found on session lookup
CVE-2026-22989nfsd: check that server is running in unlock_filesystem
CVE-2026-22987net/sched: act_api: avoid dereferencing ERR_PTR in tcf_idrinfo_destroy
CVE-2026-22986gpiolib: fix race condition for gdev->srcu
CVE-2026-22985idpf: Fix RSS LUT NULL pointer crash on early ethtool operations
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-2026-22983net: do not write to msg_get_inq in callee

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

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