net/bnx2x: Prevent access to a freed page in page_pool

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Summary

CVECVE-2024-26859
StatePUBLISHED
AssignerLinux
Source PriorityCVE Program / NVD first with legacy fallback
Published2024-04-17 11:15:08 UTC
Updated2026-05-12 12:16:21 UTC
DescriptionIn the Linux kernel, the following vulnerability has been resolved: net/bnx2x: Prevent access to a freed page in page_pool Fix race condition leading to system crash during EEH error handling During EEH error recovery, the bnx2x driver's transmit timeout logic could cause a race condition when handling reset tasks. The bnx2x_tx_timeout() schedules reset tasks via bnx2x_sp_rtnl_task(), which ultimately leads to bnx2x_nic_unload(). In bnx2x_nic_unload() SGEs are freed using bnx2x_free_rx_sge_range(). However, this could overlap with the EEH driver's attempt to reset the device using bnx2x_io_slot_reset(), which also tries to free SGEs. This race condition can result in system crashes due to accessing freed memory locations in bnx2x_free_rx_sge() 799 static inline void bnx2x_free_rx_sge(struct bnx2x *bp, 800 struct bnx2x_fastpath *fp, u16 index) 801 { 802 struct sw_rx_page *sw_buf = &fp->rx_page_ring[index]; 803 struct page *page = sw_buf->page; .... where sw_buf was set to NULL after the call to dma_unmap_page() by the preceding thread. EEH: Beginning: 'slot_reset' PCI 0011:01:00.0#10000: EEH: Invoking bnx2x->slot_reset() bnx2x: [bnx2x_io_slot_reset:14228(eth1)]IO slot reset initializing... bnx2x 0011:01:00.0: enabling device (0140 -> 0142) bnx2x: [bnx2x_io_slot_reset:14244(eth1)]IO slot reset --> driver unload Kernel attempted to read user page (0) - exploit attempt? (uid: 0) BUG: Kernel NULL pointer dereference on read at 0x00000000 Faulting instruction address: 0xc0080000025065fc Oops: Kernel access of bad area, sig: 11 [#1] ..... Call Trace: [c000000003c67a20] [c00800000250658c] bnx2x_io_slot_reset+0x204/0x610 [bnx2x] (unreliable) [c000000003c67af0] [c0000000000518a8] eeh_report_reset+0xb8/0xf0 [c000000003c67b60] [c000000000052130] eeh_pe_report+0x180/0x550 [c000000003c67c70] [c00000000005318c] eeh_handle_normal_event+0x84c/0xa60 [c000000003c67d50] [c000000000053a84] eeh_event_handler+0xf4/0x170 [c000000003c67da0] [c000000000194c58] kthread+0x1c8/0x1d0 [c000000003c67e10] [c00000000000cf64] ret_from_kernel_thread+0x5c/0x64 To solve this issue, we need to verify page pool allocations before freeing.

Risk And Classification

Primary CVSS: v3.1 4.7 MEDIUM from [email protected]

CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H

Problem Types: CWE-362

CVSS v3.1 Breakdown

Attack Vector
Local
Attack Complexity
High
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High

CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Operating System Linux Linux Kernel All All All All

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Linux Linux affected 4cace675d687ebd2d813e90af80ff87ee85202f9 7bcc090c81116c66936a7415f2c6b1483a4bcfd9 git Not specified
CNA Linux Linux affected 4cace675d687ebd2d813e90af80ff87ee85202f9 4f37d3a7e004bbf560c21441ca9c022168017ec4 git Not specified
CNA Linux Linux affected 4cace675d687ebd2d813e90af80ff87ee85202f9 8eebff95ce9558be66a36aa7cfb43223f3ab4699 git Not specified
CNA Linux Linux affected 4cace675d687ebd2d813e90af80ff87ee85202f9 8ffcd3ccdbda0c918c4a0f922ef1c17010f1b598 git Not specified
CNA Linux Linux affected 4cace675d687ebd2d813e90af80ff87ee85202f9 cf7d8cba639ae792a42c2a137b495eac262ac36c git Not specified
CNA Linux Linux affected 4cace675d687ebd2d813e90af80ff87ee85202f9 3a9f78b297e08ca8e88ae3ecff1f6fe2766dc5eb git Not specified
CNA Linux Linux affected 4cace675d687ebd2d813e90af80ff87ee85202f9 c51f8b6930db3f259b8820b589f2459d2df3fc68 git Not specified
CNA Linux Linux affected 4cace675d687ebd2d813e90af80ff87ee85202f9 44f9f1abb0ecc43023225ab9539167facbabf0ec git Not specified
CNA Linux Linux affected 4cace675d687ebd2d813e90af80ff87ee85202f9 d27e2da94a42655861ca4baea30c8cd65546f25d git Not specified
CNA Linux Linux affected 4.2 Not specified
CNA Linux Linux unaffected 4.2 semver Not specified
CNA Linux Linux unaffected 4.19.311 4.19.* semver Not specified
CNA Linux Linux unaffected 5.4.273 5.4.* semver Not specified
CNA Linux Linux unaffected 5.10.214 5.10.* semver Not specified
CNA Linux Linux unaffected 5.15.153 5.15.* semver Not specified
CNA Linux Linux unaffected 6.1.83 6.1.* semver Not specified
CNA Linux Linux unaffected 6.6.23 6.6.* semver Not specified
CNA Linux Linux unaffected 6.7.11 6.7.* semver Not specified
CNA Linux Linux unaffected 6.8.2 6.8.* semver Not specified
CNA Linux Linux unaffected 6.9 * original_commit_for_fix Not specified
ADP Siemens SIMATIC S7-1500 TM MFP - GNU/Linux Subsystem affected * custom Not specified

References

ReferenceSourceLinkTags
git.kernel.org/stable/c/8ffcd3ccdbda0c918c4a0f922ef1c17010f1b598 af854a3a-2127-422b-91ae-364da2661108 git.kernel.org Mailing List, Patch
git.kernel.org/stable/c/cf7d8cba639ae792a42c2a137b495eac262ac36c af854a3a-2127-422b-91ae-364da2661108 git.kernel.org Mailing List, Patch
lists.debian.org/debian-lts-announce/2024/06/msg00017.html af854a3a-2127-422b-91ae-364da2661108 lists.debian.org Mailing List
git.kernel.org/stable/c/3a9f78b297e08ca8e88ae3ecff1f6fe2766dc5eb af854a3a-2127-422b-91ae-364da2661108 git.kernel.org Mailing List, Patch
git.kernel.org/stable/c/8eebff95ce9558be66a36aa7cfb43223f3ab4699 af854a3a-2127-422b-91ae-364da2661108 git.kernel.org Mailing List, Patch
cert-portal.siemens.com/productcert/html/ssa-265688.html 0b142b55-0307-4c5a-b3c9-f314f3fb7c5e cert-portal.siemens.com
git.kernel.org/stable/c/44f9f1abb0ecc43023225ab9539167facbabf0ec af854a3a-2127-422b-91ae-364da2661108 git.kernel.org Mailing List, Patch
git.kernel.org/stable/c/4f37d3a7e004bbf560c21441ca9c022168017ec4 af854a3a-2127-422b-91ae-364da2661108 git.kernel.org Mailing List, Patch
git.kernel.org/stable/c/7bcc090c81116c66936a7415f2c6b1483a4bcfd9 af854a3a-2127-422b-91ae-364da2661108 git.kernel.org Mailing List, Patch
git.kernel.org/stable/c/c51f8b6930db3f259b8820b589f2459d2df3fc68 af854a3a-2127-422b-91ae-364da2661108 git.kernel.org Mailing List, Patch
lists.debian.org/debian-lts-announce/2024/06/msg00020.html af854a3a-2127-422b-91ae-364da2661108 lists.debian.org Mailing List
git.kernel.org/stable/c/d27e2da94a42655861ca4baea30c8cd65546f25d af854a3a-2127-422b-91ae-364da2661108 git.kernel.org Mailing List, Patch
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