ghsa-xcfc-r834-76g4
Vulnerability from github
In the Linux kernel, the following vulnerability has been resolved:
scsi: qedf: Add pointer checks in qedf_update_link_speed()
The following trace was observed:
[ 14.042059] Call Trace:
[ 14.042061]
API qedf_link_update() is getting called from QED but by that time shost_data is not initialised. This results in a NULL pointer dereference when we try to dereference shost_data while updating supported_speeds.
Add a NULL pointer check before dereferencing shost_data.
{ "affected": [], "aliases": [ "CVE-2021-47077" ], "database_specific": { "cwe_ids": [], "github_reviewed": false, "github_reviewed_at": null, "nvd_published_at": "2024-03-01T22:15:47Z", "severity": null }, "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nscsi: qedf: Add pointer checks in qedf_update_link_speed()\n\nThe following trace was observed:\n\n [ 14.042059] Call Trace:\n [ 14.042061] \u003cIRQ\u003e\n [ 14.042068] qedf_link_update+0x144/0x1f0 [qedf]\n [ 14.042117] qed_link_update+0x5c/0x80 [qed]\n [ 14.042135] qed_mcp_handle_link_change+0x2d2/0x410 [qed]\n [ 14.042155] ? qed_set_ptt+0x70/0x80 [qed]\n [ 14.042170] ? qed_set_ptt+0x70/0x80 [qed]\n [ 14.042186] ? qed_rd+0x13/0x40 [qed]\n [ 14.042205] qed_mcp_handle_events+0x437/0x690 [qed]\n [ 14.042221] ? qed_set_ptt+0x70/0x80 [qed]\n [ 14.042239] qed_int_sp_dpc+0x3a6/0x3e0 [qed]\n [ 14.042245] tasklet_action_common.isra.14+0x5a/0x100\n [ 14.042250] __do_softirq+0xe4/0x2f8\n [ 14.042253] irq_exit+0xf7/0x100\n [ 14.042255] do_IRQ+0x7f/0xd0\n [ 14.042257] common_interrupt+0xf/0xf\n [ 14.042259] \u003c/IRQ\u003e\n\nAPI qedf_link_update() is getting called from QED but by that time\nshost_data is not initialised. This results in a NULL pointer dereference\nwhen we try to dereference shost_data while updating supported_speeds.\n\nAdd a NULL pointer check before dereferencing shost_data.", "id": "GHSA-xcfc-r834-76g4", "modified": "2024-03-02T00:31:31Z", "published": "2024-03-02T00:31:31Z", "references": [ { "type": "ADVISORY", "url": "https://nvd.nist.gov/vuln/detail/CVE-2021-47077" }, { "type": "WEB", "url": "https://git.kernel.org/stable/c/11014efcec378bb0050a6cf08eaf375e3693400a" }, { "type": "WEB", "url": "https://git.kernel.org/stable/c/73578af92a0fae6609b955fcc9113e50e413c80f" }, { "type": "WEB", "url": "https://git.kernel.org/stable/c/a6362a737572f66051deb7637f3f77ddf7a4402f" } ], "schema_version": "1.4.0", "severity": [] }
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