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CVE-2026-46249— octeontx2-af: Fix PF driver crash with kexec kernel booting

AI Predicted 4.4 Difficulty: Trivial EPSS 0.11% · P2

Possible ATT&CK Techniques 1AI

T1059 · Command and Scripting Interpreter

Affected Version Matrix 18

VendorProductVersion RangeStatus
LinuxLinux54494aa5d1e68945dc79feb7c8461cd382e11d8a< b7605b9301abc18fbbf2b0e23fdd281fc768955daffected
54494aa5d1e68945dc79feb7c8461cd382e11d8a< 9769a09afda20a006b528b9e723effcae45965b2affected
54494aa5d1e68945dc79feb7c8461cd382e11d8a< 57821d1436ba1c6a6973aa32d54166fdec35558caffected
54494aa5d1e68945dc79feb7c8461cd382e11d8a< 8b5ed7c5417b7013d35b6f2507dab739013ba1a9affected
54494aa5d1e68945dc79feb7c8461cd382e11d8a< 7d56ba306e93d04696718963fb4cda2883ee7585affected
54494aa5d1e68945dc79feb7c8461cd382e11d8a< 9c3398e5b3a914b74276d44ab54c49123b89c61aaffected
54494aa5d1e68945dc79feb7c8461cd382e11d8a< 1370736836a18b5e0cd74bcc9cffe11d21f1fe79affected
54494aa5d1e68945dc79feb7c8461cd382e11d8a< 2d2d574309e3ae84ee794869a5da8b4c38753a94affected
… +10 more rows
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I. Basic Information for CVE-2026-46249

Vulnerability Information
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Vulnerability Title
octeontx2-af: Fix PF driver crash with kexec kernel booting
Source: NVD (National Vulnerability Database)
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: octeontx2-af: Fix PF driver crash with kexec kernel booting During a kexec reboot the hardware is not power-cycled, so AF state from the old kernel can persist into the new kernel. When AF and PF drivers are built as modules, the PF driver may probe before AF reinitializes the hardware. The PF driver treats the RVUM block revision as an indication that AF initialization is complete. If this value is left uncleared at shutdown, PF may incorrectly assume AF is ready and access stale hardware state, leading to a crash. Clear the RVUM block revision during AF shutdown to avoid PF mis-detecting AF readiness after kexec.
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octeontx2-af驱动在kexec重启时未清除RVUM块修订版本，导致PF驱动错误判断AF就绪状态并访问陈旧硬件状态，可能导致驱动崩溃。
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 54494aa5d1e68945dc79feb7c8461cd382e11d8a ~ b7605b9301abc18fbbf2b0e23fdd281fc768955d -
LinuxLinux 4.20 -

II. Public POCs for CVE-2026-46249

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III. Intelligence Information for CVE-2026-46249

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Patches & Fixes for CVE-2026-46249 (8)

Same Patch Batch · Linux · 2026-06-03 · 32 CVEs total

CVE-2026-462449.1 CRITICALnetfilter: nft_inner: Fix IPv6 inner_thoff desync
CVE-2026-462669.1 CRITICALinet: RAW sockets using IPPROTO_RAW MUST drop incoming ICMP
CVE-2026-462648.8 HIGHdrm/xe/pf: Fix sysfs initialization
CVE-2026-462738.6 HIGHibmveth: Disable GSO for packets with small MSS
CVE-2026-462518.4 HIGHbtrfs: fix block_group_tree dirty_list corruption
CVE-2026-462708.4 HIGHpower: supply: rt9455: Fix use-after-free in power_supply_changed()
CVE-2026-462537.8 HIGHpstore/ram: fix buffer overflow in persistent_ram_save_old()
CVE-2026-462597.8 HIGHprocfs: fix missing RCU protection when reading real_parent in do_task_stat()
CVE-2026-462607.8 HIGHipv6: Fix out-of-bound access in fib6_add_rt2node().
CVE-2026-462637.8 HIGHdrm/amd/display: Fix out-of-bounds stream encoder index v3
CVE-2026-462717.8 HIGHwifi: ath12k: do WoW offloads only on primary link
CVE-2026-462657.5 HIGHRDMA/hns: Fix WQ_MEM_RECLAIM warning
CVE-2026-462507.3 HIGHMIPS: Work around LLVM bug when gp is used as global register variable
CVE-2026-46246power: supply: pm8916_lbc: Fix use-after-free for extcon in IRQ handler
CVE-2026-46247clk: qcom: gfx3d: add parent to parent request map
CVE-2026-46245drm/amd/display: Fix dc_link NULL handling in HPD init
CVE-2025-71314drm/panthor: Recover from panthor_gpu_flush_caches() failures
CVE-2025-71313PCI: endpoint: Add missing NULL check for alloc_workqueue()
CVE-2026-46248wifi: ath12k: clear stale link mapping of ahvif->links_map
CVE-2026-46252regulator: core: fix locking in regulator_resolve_supply() error path

Showing top 20 of 32 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2026-46249

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