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CVE-2026-98911— dpaa2-switch: fix the error path in dpaa2_switch_rx()

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.

在 Linux 内核中，以下漏洞已被修复： dpaa2-switch：修复 dpaa2_switch_rx() 函数中的错误处理路径 当 dpaa2_switch_rx() 函数执行过程中发生错误时，会调用 dpaa2_switch_free_fd() 来释放帧描述符（FD）。然而，这种做法是错误的，因为 dpaa2_switch_free_fd() 的设计用途是处理发送（Tx）帧描述符，它期望在 FD 数据的软件注释区域中找到一个有效的 skb 指针，以便调用 dev_kfree_skb()。 修复方法是将原本位

AI Predicted 7.8 Difficulty: Moderate

Possible ATT&CK Techniques 1 AI

T1069 · Permission Groups Discovery

Affected Version Matrix 17

VendorProduct Version RangeStatus
Linux Linux 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2< 791068c962469af0090e1a1ee63657fb9eef40db affected
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2< ee54f8d7e642c44cfcc2dcb390b4c50e145d81b8 affected
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2< 259ad6093204b999d41e7e6d0ad90ef9a71a44ab affected
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2< f4ceb8e3d6d5becb4cda7a7098a8638e18c835a1 affected
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2< fa232b4496cb59503ae5108c756cbe10e59b0bc3 affected
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2< 74c1c9f5c0c30bbd0c2cf87b6e3507e7ea46c13d affected
< 5.15.222 affected
< 6.1.189 affected
… +9 more rows
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I. Basic Information for CVE-2026-98911

Vulnerability Information
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Vulnerability Title
dpaa2-switch: fix the error path in dpaa2_switch_rx()
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: dpaa2-switch: fix the error path in dpaa2_switch_rx() In case of an error in dpaa2_switch_rx(), the dpaa2_switch_free_fd() function is called in order to free the FD. This is incorrect since the dpaa2_switch_free_fd() is intended to be used on Tx frame descriptors, meaning that it expects in the software annotation area of the FD data to find a valid skb pointer on which to call dev_kfree_skb(). Fix this by extracting the dma_unmap_page() from dpaa2_switch_build_linear_skb() directly into the dpaa2_switch_rx() function. This allows us to directly use free_pages() in case of an error before an SKB was created and kfree_skb() afterwards.
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

Affected Products

Vendor Product Affected Versions CPE Subscribe
Linux Linux 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 ~ 791068c962469af0090e1a1ee63657fb9eef40db -
Linux Linux 5.15.222 ~ 5.15.* -

II. Public POCs for CVE-2026-98911

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III. Intelligence Information for CVE-2026-98911

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Patches & Fixes for CVE-2026-98911 (4)

Same Patch Batch · Linux · 2026-10-23 · 218 CVEs total

CVE-2026-98938 rust: irq: pass RegistrationInner as cookie to request_irq
CVE-2026-98951 riscv: ptrace: Zero-initialize regset buffers before copyin
CVE-2026-98950 flow_dissector: avoid u16 truncation of hlen in bpf_flow_dissect()
CVE-2026-98949 drm/imagination: Fix reference and vm_bo handling in remap()
CVE-2026-98948 mlxsw: spectrum_flower: Fix port range register leak in tmplt_create()
CVE-2026-98947 vsock: Fix memory leak in vmci_transport_recv_dgram_cb()
CVE-2026-98946 drm/vc4: Disable the V3D interrupt across runtime suspend
CVE-2026-98945 HID: steam: Rearrange teardown sequence
CVE-2026-98944 HID: steam: Refactor registration
CVE-2026-98943 HID: steam: Clean up locking
CVE-2026-98942 sched_ext: Build the cid tables privately and publish them with RCU
CVE-2026-98941 ext4: don't enable large folios on encrypted inodes
CVE-2026-98940 ASoC: qcom: lpass-cpu: use DAI table index for playback constraints
CVE-2026-98939 x86/mm: Drop unnecessary PMD page copy when freeing
CVE-2026-98927 KVM: arm64: nv: Fix life cycle of the nested_mmus array
CVE-2026-98930 KVM: s390: Fix IRQ injection with SIGP Stop and Store Status
CVE-2026-98929 macsec: initialize SecY before registering the netdevice
CVE-2026-98928 KVM: arm64: Derive GUEST_HAS_SVE from the SVE feature bit at EL2
CVE-2026-98931 mtd: spinand: fix NULL pointer dereference with no ECC engine
CVE-2026-98926 drm/amd/display: Remove sink usage from DPMS

Showing top 20 of 218 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2026-98911

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