CVE-2024-56717 (GCVE-0-2024-56717)

Vulnerability from cvelistv5 – Published: 2024-12-29 08:48 – Updated: 2025-11-03 20:53
VLAI?
Title
net: mscc: ocelot: fix incorrect IFH SRC_PORT field in ocelot_ifh_set_basic()
Summary
In the Linux kernel, the following vulnerability has been resolved: net: mscc: ocelot: fix incorrect IFH SRC_PORT field in ocelot_ifh_set_basic() Packets injected by the CPU should have a SRC_PORT field equal to the CPU port module index in the Analyzer block (ocelot->num_phys_ports). The blamed commit copied the ocelot_ifh_set_basic() call incorrectly from ocelot_xmit_common() in net/dsa/tag_ocelot.c. Instead of calling with "x", it calls with BIT_ULL(x), but the field is not a port mask, but rather a single port index. [ side note: this is the technical debt of code duplication :( ] The error used to be silent and doesn't appear to have other user-visible manifestations, but with new changes in the packing library, it now fails loudly as follows: ------------[ cut here ]------------ Cannot store 0x40 inside bits 46-43 - will truncate sja1105 spi2.0: xmit timed out WARNING: CPU: 1 PID: 102 at lib/packing.c:98 __pack+0x90/0x198 sja1105 spi2.0: timed out polling for tstamp CPU: 1 UID: 0 PID: 102 Comm: felix_xmit Tainted: G W N 6.13.0-rc1-00372-gf706b85d972d-dirty #2605 Call trace: __pack+0x90/0x198 (P) __pack+0x90/0x198 (L) packing+0x78/0x98 ocelot_ifh_set_basic+0x260/0x368 ocelot_port_inject_frame+0xa8/0x250 felix_port_deferred_xmit+0x14c/0x258 kthread_worker_fn+0x134/0x350 kthread+0x114/0x138 The code path pertains to the ocelot switchdev driver and to the felix secondary DSA tag protocol, ocelot-8021q. Here seen with ocelot-8021q. The messenger (packing) is not really to blame, so fix the original commit instead.
Severity ?
5.5 (Medium)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CWE
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 06bcb9032e05ad717f9fd0a6e2fd3ae7f430fa31 , < 59c4ca8d8d7918eb6e2df91d2c254827264be309 (git)
Affected: ff7f554bbd75d5cbf00cded81d05147c6617e876 , < 2f3c62ffe88116cd2a39cd73e01103535599970f (git)
Affected: e1b9e80236c540fa85d76e2d510d1b38e1968c5d , < a8836eae3288c351acd3b2743d2fad2a4ee2bd56 (git)
Affected: e1b9e80236c540fa85d76e2d510d1b38e1968c5d , < 2d5df3a680ffdaf606baa10636bdb1daf757832e (git)
Affected: be3a532167dd562ec38900c846e7ae6cc39aa2f1 (git)
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    Linux Linux Affected: 6.11
Unaffected: 0 , < 6.11 (semver)
Unaffected: 6.1.122 , ≤ 6.1.* (semver)
Unaffected: 6.6.68 , ≤ 6.6.* (semver)
Unaffected: 6.12.7 , ≤ 6.12.* (semver)
Unaffected: 6.13 , ≤ * (original_commit_for_fix)
Create a notification for this product.
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  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
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